Windows Server 2025 STIG SCAP Benchmark V1R2 (SCAP)

b

Windows Server 2025 systems must have a Trusted Platform Module (TPM) enabled and ready for use.

RMF Control
Severity: M
CCI: CCI-004910
Version: WN25-00-000090
Vuln IDs: V-277993
Rule IDs: SV-277993r1212171_rule

Credential Guard uses virtualization-based security to protect data that could be used in credential theft attacks if compromised. A number of system requirements must be met for Credential Guard to be configured and enabled properly. Without a TPM enabled and ready for use, Credential Guard keys are stored in a less secure method using software.

Fix: F-82428r1212170_fix

Ensure systems have a TPM that is configured for use. (Version 2.0 supports Credential Guard.) The TPM must be enabled in the firmware. Run "tpm.msc" for configuration options in Windows.

c

Windows Server 2025 local volumes must use a format that supports New Technology File System (NTFS) attributes.

RMF Control: AC-3
Severity: H
CCI: CCI-000213
Version: WN25-00-000130
Vuln IDs: V-277997
Rule IDs: SV-277997r1268226_rule

The ability to set access permissions and auditing is critical to maintaining the security and proper access controls of a system. To support this, volumes must be formatted using a file system that supports NTFS attributes.

Fix: F-82432r1180696_fix

Format volumes to use NTFS, ReFS, or CSVFS.

b

Windows Server 2025 must not have the Fax Server role installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000320
Vuln IDs: V-278015
Rule IDs: SV-278015r1180751_rule

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Fix: F-82450r1180750_fix

Uninstall the "Fax Server" role. Start Server Manager. Select the server with the role. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Fax Server" on the "Roles" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must not have the Microsoft FTP service installed unless required by the organization.

RMF Control: CM-7
Severity: M
CCI: CCI-000382
Version: WN25-00-000330
Vuln IDs: V-278016
Rule IDs: SV-278016r1181795_rule

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption.

Fix: F-82451r1180753_fix

Uninstall the "FTP Server" role. Start Server Manager. Select the server with the role. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "FTP Server" under "Web Server (IIS)" on the "Roles" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must not have Bluetooth enabled unless required by the organization.

RMF Control: CM-7
Severity: M
CCI: CCI-000382
Version: WN25-00-000333
Vuln IDs: V-278018
Rule IDs: SV-278018r1180760_rule

Unnecessary applications and/or services such as Bluetooth could allow an attacker to connect with intentions to take over or disrupt the system.

Fix: F-82453r1180759_fix

Validate the site documentation to ensure the approval of use for Wi-Fi server connections. If the connection has not been approved, type "Services" in the Windows search bar. In the Services "Name " column, look for the "Bluetooth Support Service" and set this to "Disabled". Any Bluetooth devices listed or in use must be documented and approved by the information system security officer (ISSO) or authorizing official (AO).

b

Windows Server 2025 must not have the Peer Name Resolution Protocol installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000340
Vuln IDs: V-278019
Rule IDs: SV-278019r1180763_rule

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Fix: F-82454r1180762_fix

Uninstall the "Peer Name Resolution Protocol" feature. Start Server Manager. Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Peer Name Resolution Protocol" on the "Features" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must not have Simple TCP/IP Services installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000350
Vuln IDs: V-278020
Rule IDs: SV-278020r1180766_rule

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Fix: F-82455r1180765_fix

Uninstall the "Simple TCP/IP Services" feature. Start Server Manager. Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Simple TCP/IP Services" on the "Features" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must not have the Telnet Client installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000382
Version: WN25-00-000360
Vuln IDs: V-278021
Rule IDs: SV-278021r1180769_rule

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Fix: F-82456r1180768_fix

Uninstall the "Telnet Client" feature. Start Server Manager. Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Telnet Client" on the "Features" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must not have the TFTP Client installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000370
Vuln IDs: V-278022
Rule IDs: SV-278022r1180772_rule

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Fix: F-82457r1180771_fix

Uninstall the "TFTP Client" feature. Start Server Manager. Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "TFTP Client" on the "Features" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must not have the Server Message Block (SMB) v1 protocol installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000380
Vuln IDs: V-278023
Rule IDs: SV-278023r1182034_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks and is not FIPS compliant.

Fix: F-82458r1180774_fix

Uninstall the SMBv1 protocol. Open Windows PowerShell with elevated privileges (run as administrator). Enter "Uninstall-WindowsFeature -Name FS-SMB1 -Restart". (Omit the Restart parameter if an immediate restart of the system cannot be done.) Alternately: Start Server Manager. Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "SMB 1.0/CIFS File Sharing Support" on the "Features" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 must have the Server Message Block (SMB) v1 protocol disabled on the SMB server.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000390
Vuln IDs: V-278024
Rule IDs: SV-278024r1182036_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks, as well as not being FIPS compliant.

Fix: F-82459r1182035_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> Configure SMBv1 Server to "Disabled". Restart the system for the change to take effect. This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Windows Server 2025 must have the Server Message Block (SMB) v1 protocol disabled on the SMB client.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000400
Vuln IDs: V-278025
Rule IDs: SV-278025r1182038_rule

SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks such as collision and preimage attacks as well as not being FIPS compliant.

Fix: F-82460r1182037_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> Configure SMBv1 client driver to "Enabled" with "Disable driver (recommended)" selected for "Configure MrxSmb10 driver". Restart the system for the changes to take effect. This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and "SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Windows Server 2025 must not have Windows PowerShell 2.0 installed.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-00-000410
Vuln IDs: V-278026
Rule IDs: SV-278026r1180784_rule

Windows PowerShell 5.x added advanced logging features that can provide additional detail when malware has been run on a system. Disabling the Windows PowerShell 2.0 mitigates against a downgrade attack that evades the Windows PowerShell 5.x script block logging feature.

Fix: F-82461r1180783_fix

Uninstall the Windows PowerShell 2.0 Engine. Start Server Manager. Select the server with the feature. Scroll down to "ROLES AND FEATURES" in the right pane. Select "Remove Roles and Features" from the drop-down "TASKS" list. Select the appropriate server on the "Server Selection" page and click "Next". Deselect "Windows PowerShell 2.0 Engine" under "Windows PowerShell" on the "Features" page. Click "Next" and "Remove" as prompted.

b

Windows Server 2025 account lockout duration must be configured to 15 minutes or greater.

RMF Control: AC-7
Severity: M
CCI: CCI-002238
Version: WN25-AC-000010
Vuln IDs: V-278033
Rule IDs: SV-278033r1180805_rule

When enabled, the account lockout feature prevents brute-force password attacks on the system. This parameter specifies the period of time that an account will remain locked after the specified number of failed logon attempts.

Fix: F-82468r1180804_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy. Set "Account lockout duration" to "15" minutes or greater. A value of "0" is also acceptable, requiring an administrator to unlock the account.

b

Windows Server 2025 must have the number of allowed bad logon attempts configured to three or less.

RMF Control: AC-7
Severity: M
CCI: CCI-000044
Version: WN25-AC-000020
Vuln IDs: V-278034
Rule IDs: SV-278034r1180808_rule

The account lockout feature, when enabled, prevents brute-force password attacks on the system. The higher this value is, the less effective the account lockout feature will be in protecting the local system. The number of bad logon attempts must be reasonably small to minimize the possibility of a successful password attack while allowing for honest errors made during normal user logon.

Fix: F-82469r1180807_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy. Set "Account lockout threshold" to "3" or fewer invalid logon attempts (excluding "0", which is unacceptable).

b

Windows Server 2025 must have the period of time before the bad logon counter is reset configured to 15 minutes or greater.

RMF Control: AC-7
Severity: M
CCI: CCI-000044
Version: WN25-AC-000030
Vuln IDs: V-278035
Rule IDs: SV-278035r1180811_rule

When enabled, the account lockout feature prevents brute-force password attacks on the system. This parameter specifies the period of time that must pass after failed logon attempts before the counter is reset to "0". The smaller this value is, the less effective the account lockout feature will be in protecting the local system.

Fix: F-82470r1180810_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy. Set "Reset account lockout counter after" to at least "15" minutes.

b

Windows Server 2025 password history must be configured to 24 passwords remembered.

RMF Control
Severity: M
CCI: CCI-004061
Version: WN25-AC-000040
Vuln IDs: V-278036
Rule IDs: SV-278036r1256715_rule

A system is more vulnerable to unauthorized access when system users recycle the same password several times without being required to change to a unique password on a regularly scheduled basis. This enables users to effectively negate the purpose of mandating periodic password changes. The default value is "24" for Windows domain systems. DoW has decided this is the appropriate value for all Windows systems.

Fix: F-82471r1180813_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. Set "Enforce password history" to "24" passwords remembered.

b

Windows Server 2025 maximum password age must be configured to 180 days or less.

RMF Control
Severity: M
CCI: CCI-004066
Version: WN25-AC-000050
Vuln IDs: V-278037
Rule IDs: SV-278037r1268211_rule

The longer a password is in use, the greater the opportunity for someone to gain unauthorized knowledge of the passwords. Scheduled changing of passwords hinders the ability of unauthorized system users to crack passwords and gain access to a system.

Fix: F-82472r1266508_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. Set "Maximum password age" to "180" days or less (excluding "0", which is unacceptable).

b

Windows Server 2025 minimum password age must be configured to at least one day.

RMF Control
Severity: M
CCI: CCI-004066
Version: WN25-AC-000060
Vuln IDs: V-278038
Rule IDs: SV-278038r1180820_rule

Permitting passwords to be changed in immediate succession within the same day allows users to cycle passwords through their history database. This enables users to effectively negate the purpose of mandating periodic password changes.

Fix: F-82473r1180819_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. Set "Minimum password age" to at least "1" day.

b

Windows Server 2025 must have the built-in Windows password complexity policy enabled.

RMF Control
Severity: M
CCI: CCI-004066
Version: WN25-AC-000080
Vuln IDs: V-278039
Rule IDs: SV-278039r1180823_rule

The use of complex passwords increases their strength against attack. The built-in Windows password complexity policy requires passwords to contain at least three of the four types of characters (numbers, uppercase and lowercase letters, and special characters) and prevents the inclusion of user names or parts of user names. Satisfies: SRG-OS-000069-GPOS-00037, SRG-OS-000070-GPOS-00038, SRG-OS-000071-GPOS-00039, SRG-OS-000266-GPOS-00101

Fix: F-82474r1180822_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. Set the value for "Password must meet complexity requirements" to "Enabled".

c

Windows Server 2025 reversible password encryption must be disabled.

RMF Control
Severity: H
CCI: CCI-004062
Version: WN25-AC-000090
Vuln IDs: V-278040
Rule IDs: SV-278040r1180826_rule

Storing passwords using reversible encryption is essentially the same as storing clear-text versions of the passwords, which are easily compromised. For this reason, this policy must never be enabled.

Fix: F-82475r1180825_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. Set "Store passwords using reversible encryption" to "Disabled".

b

Windows Server 2025 permissions for the Application event log must prevent access by nonprivileged accounts.

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN25-AU-000030
Vuln IDs: V-278043
Rule IDs: SV-278043r1180835_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Application event log may be susceptible to tampering if proper permissions are not applied. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029

Fix: F-82478r1180834_fix

Configure the permissions on the Application event log file (Application.evtx) to prevent access by nonprivileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b

Windows Server 2025 permissions for the Security event log must prevent access by nonprivileged accounts.

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN25-AU-000040
Vuln IDs: V-278044
Rule IDs: SV-278044r1182051_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Security event log may disclose sensitive information or be susceptible to tampering if proper permissions are not applied. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029

Fix: F-82479r1180837_fix

Configure the permissions on the Security event log file (Security.evtx) to prevent access by nonprivileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b

Windows Server 2025 permissions for the System event log must prevent access by nonprivileged accounts.

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN25-AU-000050
Vuln IDs: V-278045
Rule IDs: SV-278045r1180841_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The System event log may be susceptible to tampering if proper permissions are not applied. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029

Fix: F-82480r1180840_fix

Configure the permissions on the System event log file (System.evtx) to prevent access by nonprivileged accounts. The default permissions listed below satisfy this requirement: Eventlog - Full Control SYSTEM - Full Control Administrators - Full Control The default location is the "%SystemRoot%\System32\winevt\Logs" folder. If the location of the logs has been changed, when adding Eventlog to the permissions, it must be entered as "NT Service\Eventlog".

b

Windows Server 2025 Event Viewer must be protected from unauthorized modification and deletion.

RMF Control: AU-9
Severity: M
CCI: CCI-001494
Version: WN25-AU-000060
Vuln IDs: V-278046
Rule IDs: SV-278046r1211151_rule

Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. Operating systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools and the corresponding user rights to make access decisions regarding the modification or deletion of audit tools. Satisfies: SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099

Fix: F-82481r1180843_fix

Configure the permissions on the "Eventvwr.exe" file to prevent modification by any groups or accounts other than TrustedInstaller. The default permissions listed below satisfy this requirement: TrustedInstaller - Full Control Administrators, SYSTEM, Users, ALL APPLICATION PACKAGES, ALL RESTRICTED APPLICATION PACKAGES - Read & Execute The default location is the "%SystemRoot%\System32" folder.

b

Windows Server 2025 must be configured to audit Account Logon - Credential Validation successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000070
Vuln IDs: V-278047
Rule IDs: SV-278047r1180847_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential Validation records events related to validation tests on credentials for a user account logon.

Fix: F-82482r1180846_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Logon >> Audit Credential Validation with "Success" selected.

b

Windows Server 2025 must be configured to audit Account Logon - Credential Validation failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000080
Vuln IDs: V-278048
Rule IDs: SV-278048r1180850_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential Validation records events related to validation tests on credentials for a user account logon.

Fix: F-82483r1180849_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Logon >> Audit Credential Validation with "Failure" selected.

b

Windows Server 2025 must be configured to audit Account Management - Other Account Management Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000090
Vuln IDs: V-278049
Rule IDs: SV-278049r1180853_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Other Account Management Events records events such as the access of a password hash or the Password Policy Checking API being called. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210

Fix: F-82484r1180852_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> Audit Other Account Management Events with "Success" selected.

b

Windows Server 2025 must be configured to audit Account Management - Security Group Management successes.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN25-AU-000100
Vuln IDs: V-278050
Rule IDs: SV-278050r1180856_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Security Group Management records events such as creating, deleting, or changing security groups, including changes in group members. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221

Fix: F-82485r1180855_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> Audit Security Group Management with "Success" selected.

b

Windows Server 2025 must be configured to audit Account Management - User Account Management successes.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN25-AU-000110
Vuln IDs: V-278051
Rule IDs: SV-278051r1180859_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. User Account Management records events such as creating, changing, deleting, renaming, disabling, or enabling user accounts. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221

Fix: F-82486r1180858_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> Audit User Account Management with "Success" selected.

b

Windows Server 2025 must be configured to audit Account Management - User Account Management failures.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN25-AU-000120
Vuln IDs: V-278052
Rule IDs: SV-278052r1180862_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. User Account Management records events such as creating, changing, deleting, renaming, disabling, or enabling user accounts. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221

Fix: F-82487r1180861_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> Audit User Account Management with "Failure" selected.

b

Windows Server 2025 must be configured to audit Detailed Tracking - Plug and Play Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000130
Vuln IDs: V-278053
Rule IDs: SV-278053r1180865_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Plug and Play activity records events related to the successful connection of external devices.

Fix: F-82488r1180864_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Detailed Tracking >> Audit PNP Activity with "Success" selected.

b

Windows Server 2025 must be configured to audit Detailed Tracking - Process Creation successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000140
Vuln IDs: V-278054
Rule IDs: SV-278054r1180868_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Process Creation records events related to the creation of a process and the source. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215

Fix: F-82489r1180867_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Detailed Tracking >> Audit Process Creation with "Success" selected.

b

Windows Server 2025 must be configured to audit Logon/Logoff - Account Lockout successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000150
Vuln IDs: V-278055
Rule IDs: SV-278055r1180871_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Account Lockout events can be used to identify potentially malicious logon attempts. Satisfies: SRG-OS-000240-GPOS-00090, SRG-OS-000470-GPOS-00214

Fix: F-82490r1180870_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Account Lockout with "Success" selected.

b

Windows Server 2025 must be configured to audit Logon/Logoff - Account Lockout failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000160
Vuln IDs: V-278056
Rule IDs: SV-278056r1180874_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Account Lockout events can be used to identify potentially malicious logon attempts. Satisfies: SRG-OS-000240-GPOS-00090, SRG-OS-000470-GPOS-00214

Fix: F-82491r1180873_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Account Lockout with "Failure" selected.

b

Windows Server 2025 must be configured to audit Logon/Logoff - Group Membership successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000170
Vuln IDs: V-278057
Rule IDs: SV-278057r1180877_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Group Membership records information related to the group membership of a user's logon token.

Fix: F-82492r1180876_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Group Membership with "Success" selected.

b

Windows Server 2025 must be configured to audit logoff successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000180
Vuln IDs: V-278058
Rule IDs: SV-278058r1180880_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Logoff records user logoffs. If this is an interactive logoff, it is recorded on the local system. If it is to a network share, it is recorded on the system accessed.

Fix: F-82493r1180879_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Logoff with "Success" selected.

b

Windows Server 2025 must be configured to audit logon successes.

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN25-AU-000190
Vuln IDs: V-278059
Rule IDs: SV-278059r1268219_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Logon records user logons. If this is an interactive logon, it is recorded on the local system. If it is to a network share, it is recorded on the system accessed. Satisfies: SRG-OS-000032-GPOS-00013, SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220

Fix: F-82494r1180882_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Logon with "Success" selected.

b

Windows Server 2025 must be configured to audit logon failures.

RMF Control: AC-17
Severity: M
CCI: CCI-000067
Version: WN25-AU-000200
Vuln IDs: V-278060
Rule IDs: SV-278060r1268219_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Logon records user logons. If this is an interactive logon, it is recorded on the local system. If it is to a network share, it is recorded on the system accessed. Satisfies: SRG-OS-000032-GPOS-00013, SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220

Fix: F-82495r1180885_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Logon with "Failure" selected.

b

Windows Server 2025 must be configured to audit Logon/Logoff - Special Logon successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000210
Vuln IDs: V-278061
Rule IDs: SV-278061r1180889_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Special Logon records special logons that have administrative privileges and can be used to elevate processes. Satisfies: SRG-OS-000470-GPOS-00214, SRG-OS-000472-GPOS-00217, SRG-OS-000473-GPOS-00218, SRG-OS-000475-GPOS-00220

Fix: F-82496r1180888_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Logon/Logoff >> Audit Special Logon with "Success" selected.

b

Windows Server 2025 must be configured to audit Object Access - Other Object Access Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000220
Vuln IDs: V-278062
Rule IDs: SV-278062r1180892_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing for other object access records events related to the management of task scheduler jobs and COM+ objects.

Fix: F-82497r1180891_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> Audit Other Object Access Events with "Success" selected.

b

Windows Server 2025 must be configured to audit Object Access - Other Object Access Events failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000230
Vuln IDs: V-278063
Rule IDs: SV-278063r1180895_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Auditing for other object access records events related to the management of task scheduler jobs and COM+ objects.

Fix: F-82498r1180894_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> Audit Other Object Access Events with "Failure" selected.

b

Windows Server 2025 must be configured to audit Object Access - Removable Storage successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000240
Vuln IDs: V-278064
Rule IDs: SV-278064r1180898_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Removable Storage auditing under Object Access records events related to access attempts on file system objects on removable storage devices.

Fix: F-82499r1180897_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> Audit Removable Storage with "Success" selected.

b

Windows Server 2025 must be configured to audit Object Access - Removable Storage failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000250
Vuln IDs: V-278065
Rule IDs: SV-278065r1180901_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Removable Storage auditing under Object Access records events related to access attempts on file system objects on removable storage devices.

Fix: F-82500r1180900_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> Audit Removable Storage with "Failure" selected.

b

Windows Server 2025 must be configured to audit Policy Change - Audit Policy Change successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000260
Vuln IDs: V-278066
Rule IDs: SV-278066r1180904_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Policy Change records events related to changes in audit policy. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82501r1180903_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> Audit Audit Policy Change with "Success" selected.

b

Windows Server 2025 must be configured to audit Policy Change - Audit Policy Change failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000270
Vuln IDs: V-278067
Rule IDs: SV-278067r1180907_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Policy Change records events related to changes in audit policy. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82502r1180906_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> Audit Audit Policy Change with "Failure" selected.

b

Windows Server 2025 must be configured to audit Policy Change - Authentication Policy Change successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000280
Vuln IDs: V-278068
Rule IDs: SV-278068r1180910_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Authentication Policy Change records events related to changes in authentication policy, including Kerberos policy and Trust changes. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210

Fix: F-82503r1180909_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> Audit Authentication Policy Change with "Success" selected.

b

Windows Server 2025 must be configured to audit Policy Change - Authorization Policy Change successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000281
Vuln IDs: V-278069
Rule IDs: SV-278069r1180913_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Authorization Policy Change records events related to changes in user rights, such as "Create a token object". Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210

Fix: F-82504r1180912_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Policy Change >> Audit Authorization Policy Change with "Success" selected.

b

Windows Server 2025 must be configured to audit Privilege Use - Sensitive Privilege Use successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000300
Vuln IDs: V-278070
Rule IDs: SV-278070r1180916_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Sensitive Privilege Use records events related to use of sensitive privileges, such as "Act as part of the operating system" or "Debug programs". Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210, SRG-OS-000755-GPOS-00220

Fix: F-82505r1180915_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Privilege Use >> Audit Sensitive Privilege Use with "Success" selected.

b

Windows Server 2025 must be configured to audit Privilege Use - Sensitive Privilege Use failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000310
Vuln IDs: V-278071
Rule IDs: SV-278071r1180919_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Sensitive Privilege Use records events related to use of sensitive privileges, such as "Act as part of the operating system" or "Debug programs". Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000064-GPOS-00033, SRG-OS-000462-GPOS-00206, SRG-OS-000466-GPOS-00210, SRG-OS-000755-GPOS-00220

Fix: F-82506r1180918_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Privilege Use >> Audit Sensitive Privilege Use with "Failure" selected.

b

Windows Server 2025 must be configured to audit System - IPsec Driver successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000320
Vuln IDs: V-278072
Rule IDs: SV-278072r1180922_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. IPsec Driver records events related to the IPsec Driver, such as dropped packets. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82507r1180921_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit IPsec Driver with "Success" selected.

b

Windows Server 2025 must be configured to audit System - IPsec Driver failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000330
Vuln IDs: V-278073
Rule IDs: SV-278073r1180925_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. IPsec Driver records events related to the IPsec Driver, such as dropped packets. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82508r1180924_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit IPsec Driver with "Failure" selected.

b

Windows Server 2025 must be configured to audit System - Other System Events successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000340
Vuln IDs: V-278074
Rule IDs: SV-278074r1180928_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other System Events records information related to cryptographic key operations and the Windows Firewall service. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82509r1180927_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit Other System Events with "Success" selected.

b

Windows Server 2025 must be configured to audit System - Other System Events failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000350
Vuln IDs: V-278075
Rule IDs: SV-278075r1180931_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Other System Events records information related to cryptographic key operations and the Windows Firewall service. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82510r1180930_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit Other System Events with "Failure" selected.

b

Windows Server 2025 must be configured to audit System - Security State Change successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000360
Vuln IDs: V-278076
Rule IDs: SV-278076r1180934_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Security State Change records events related to changes in the security state, such as startup and shutdown of the system. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82511r1180933_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit Security State Change with "Success" selected.

b

Windows Server 2025 must be configured to audit System - Security System Extension successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000370
Vuln IDs: V-278077
Rule IDs: SV-278077r1180937_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Security System Extension records events related to extension code being loaded by the security subsystem. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82512r1180936_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit Security System Extension with "Success" selected.

b

Windows Server 2025 must be configured to audit System - System Integrity successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000380
Vuln IDs: V-278078
Rule IDs: SV-278078r1180940_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. System Integrity records events related to violations of integrity to the security subsystem. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222

Fix: F-82513r1180939_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit System Integrity with "Success" selected.

b

Windows Server 2025 must be configured to audit System - System Integrity failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000390
Vuln IDs: V-278079
Rule IDs: SV-278079r1180943_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. System Integrity records events related to violations of integrity to the security subsystem. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222

Fix: F-82514r1180942_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> System >> Audit System Integrity with "Failure" selected.

b

Windows Server 2025 must prevent the display of slide shows on the lock screen.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000010
Vuln IDs: V-278080
Rule IDs: SV-278080r1180946_rule

Slide shows displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged-on user.

Fix: F-82515r1180945_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Control Panel >> Personalization >> Prevent enabling lock screen slide show to "Enabled".

a

Windows Server 2025 Internet Protocol version 6 (IPv6) source routing must be configured to the highest protection level to prevent IP source routing.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN25-CC-000030
Vuln IDs: V-278082
Rule IDs: SV-278082r1268251_rule

Configuring the system to disable IPv6 source routing protects against spoofing.

Fix: F-82517r1180951_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing) to "Enabled" with "Highest protection, source routing is completely disabled" selected. This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and "MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

a

Windows Server 2025 source routing must be configured to the highest protection level to prevent Internet Protocol (IP) source routing.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN25-CC-000040
Vuln IDs: V-278083
Rule IDs: SV-278083r1268251_rule

Configuring the system to disable IP source routing protects against spoofing.

Fix: F-82518r1180954_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> MSS: (DisableIPSourceRouting) IP source routing protection level (protects against packet spoofing) to "Enabled" with "Highest protection, source routing is completely disabled" selected. This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and "MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

a

Windows Server 2025 must be configured to prevent Internet Control Message Protocol (ICMP) redirects from overriding Open Shortest Path First (OSPF)-generated routes.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN25-CC-000050
Vuln IDs: V-278084
Rule IDs: SV-278084r1268251_rule

Allowing ICMP redirect of routes can lead to traffic not being routed properly. When disabled, this forces ICMP to be routed via the shortest path first.

Fix: F-82519r1180957_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> MSS: (EnableICMPRedirect) Allow ICMP redirects to override OSPF generated routes to "Disabled". This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and "MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

a

Windows Server 2025 must be configured to ignore NetBIOS name release requests except from WINS servers.

RMF Control: SC-5
Severity: L
CCI: CCI-002385
Version: WN25-CC-000060
Vuln IDs: V-278085
Rule IDs: SV-278085r1180961_rule

Configuring the system to ignore name release requests, except from WINS servers, prevents a denial-of-service (DoS) attack. The DoS consists of sending a NetBIOS name release request to the server for each entry in the server's cache, causing a response delay in the normal operation of the server's WINS resolution capability.

Fix: F-82520r1180960_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MSS (Legacy) >> MSS: (NoNameReleaseOnDemand) Allow the computer to ignore NetBIOS name release requests except from WINS servers to "Enabled". This policy setting requires the installation of the MSS-Legacy custom templates included with the STIG package. "MSS-Legacy.admx" and "MSS-Legacy.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Windows Server 2025 insecure logons to an SMB server must be disabled.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000070
Vuln IDs: V-278086
Rule IDs: SV-278086r1268251_rule

Insecure guest logons allow unauthenticated access to shared folders. Shared resources on a system must require authentication to establish proper access.

Fix: F-82521r1180963_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Lanman Workstation >> Enable insecure guest logons to "Disabled".

b

Windows Server 2025 hardened Universal Naming Convention (UNC) paths must be defined to require mutual authentication and integrity for at least the \\*\SYSVOL and \\*\NETLOGON shares.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000080
Vuln IDs: V-278087
Rule IDs: SV-278087r1268251_rule

Additional security requirements are applied to UNC paths specified in hardened UNC paths before allowing access to them. This aids in preventing tampering with or spoofing of connections to these paths.

Fix: F-82522r1181927_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Provider >> Hardened UNC Paths" to "Enabled" with at least the following configured in "Hardened UNC Paths" (click "Show" to display): Value Name: \\*\SYSVOL Value: RequireMutualAuthentication=1, RequireIntegrity=1 Value Name: \\*\NETLOGON Value: RequireMutualAuthentication=1, RequireIntegrity=1

b

Windows Server 2025 command line data must be included in process creation events.

RMF Control: AU-3
Severity: M
CCI: CCI-000135
Version: WN25-CC-000090
Vuln IDs: V-278088
Rule IDs: SV-278088r1180970_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Enabling "Include command line data for process creation events" will record the command line information with the process creation events in the log. This can provide additional detail when malware has run on a system.

Fix: F-82523r1180969_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Audit Process Creation >> Include command line in process creation events to "Enabled".

b

Windows Server 2025 must be configured to enable Remote host allows delegation of nonexportable credentials.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000100
Vuln IDs: V-278089
Rule IDs: SV-278089r1268251_rule

An exportable version of credentials is provided to remote hosts when using credential delegation, which exposes them to theft on the remote host. Restricted Admin mode or Remote Credential Guard allow delegation of nonexportable credentials providing additional protection of the credentials. Enabling this configures the host to support Restricted Admin mode or Remote Credential Guard.

Fix: F-82524r1180972_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Credentials Delegation >> Remote host allows delegation of nonexportable credentials to "Enabled".

b

Windows Server 2025 Early Launch Antimalware, Boot-Start Driver Initialization Policy must prevent boot drivers identified as bad.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000130
Vuln IDs: V-278091
Rule IDs: SV-278091r1268251_rule

Compromised boot drivers can introduce malware prior to protection mechanisms that load after initialization. The Early Launch Antimalware driver can limit allowed drivers based on classifications determined by the malware protection application. At a minimum, drivers determined to be bad must not be allowed.

Fix: F-82526r1182243_fix

The default behavior is for Early Launch Antimalware - Boot-Start Driver Initialization policy to enforce "Good, unknown and bad but critical" (preventing "bad"). To correct this, or if a more secure setting is desired, configure the policy value for Computer Configuration >> Administrative Templates >> System >> Early Launch Antimalware >> Boot-Start Driver Initialization Policy to "Not Configured" or "Enabled" with any option other than "All" selected.

b

Windows Server 2025 group policy objects must be reprocessed even if they have not changed.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000140
Vuln IDs: V-278092
Rule IDs: SV-278092r1268251_rule

Registry entries for group policy settings can potentially be changed from the required configuration. This could occur as part of troubleshooting or by a malicious process on a compromised system. Enabling this setting and then selecting the "Process even if the Group Policy objects have not changed" option ensures the policies will be reprocessed even if none have been changed. This way, any unauthorized changes are forced to match the domain-based group policy settings again.

Fix: F-82527r1180981_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Group Policy >> Configure registry policy processing to "Enabled" with the option "Process even if the Group Policy objects have not changed" selected.

b

Windows Server 2025 downloading print driver packages over HTTP must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000150
Vuln IDs: V-278093
Rule IDs: SV-278093r1180985_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and will prevent uncontrolled updates to the system. This setting prevents the computer from downloading print driver packages over HTTP.

Fix: F-82528r1180984_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Internet Communication Management >> Internet Communication settings >> Turn off downloading of print drivers over HTTP to "Enabled".

b

Windows Server 2025 printing over HTTP must be turned off.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000160
Vuln IDs: V-278094
Rule IDs: SV-278094r1180988_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and will prevent uncontrolled updates to the system. This setting prevents the client computer from printing over HTTP, which allows the computer to print to printers on the intranet as well as the internet.

Fix: F-82529r1180987_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Internet Communication Management >> Internet Communication settings >> Turn off printing over HTTP to "Enabled".

b

Windows Server 2025 network selection user interface (UI) must not be displayed on the logon screen.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000170
Vuln IDs: V-278095
Rule IDs: SV-278095r1180991_rule

Enabling interaction with the network selection UI allows users to change connections to available networks without signing in to Windows.

Fix: F-82530r1180990_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Do not display network selection UI to "Enabled".

b

Windows Server 2025 users must be prompted to authenticate when the system wakes from sleep (on battery).

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000180
Vuln IDs: V-278096
Rule IDs: SV-278096r1268251_rule

A system that does not require authentication when resuming from sleep may provide access to unauthorized users. Authentication must always be required when accessing a system. This setting ensures users are prompted for a password when the system wakes from sleep (on battery).

Fix: F-82531r1180993_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Power Management >> Sleep Settings >> Require a password when a computer wakes (on battery) to "Enabled".

b

Windows Server 2025 users must be prompted to authenticate when the system wakes from sleep (plugged in).

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000190
Vuln IDs: V-278097
Rule IDs: SV-278097r1268251_rule

A system that does not require authentication when resuming from sleep may provide access to unauthorized users. Authentication must always be required when accessing a system. This setting ensures users are prompted for a password when the system wakes from sleep (plugged in).

Fix: F-82532r1180996_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Power Management >> Sleep Settings >> Require a password when a computer wakes (plugged in) to "Enabled".

a

Windows Server 2025 Application Compatibility Program Inventory must be prevented from collecting data and sending the information to Microsoft.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: WN25-CC-000200
Vuln IDs: V-278098
Rule IDs: SV-278098r1181000_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and will prevent uncontrolled updates to the system. This setting will prevent the Program Inventory from collecting data about a system and sending the information to Microsoft.

Fix: F-82533r1180999_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Application Compatibility >> Turn off Inventory Collector to "Enabled".

c

Windows Server 2025 AutoPlay must be turned off for nonvolume devices.

RMF Control: CM-7
Severity: H
CCI: CCI-001764
Version: WN25-CC-000210
Vuln IDs: V-278099
Rule IDs: SV-278099r1181003_rule

Allowing AutoPlay to execute may introduce malicious code to a system. AutoPlay begins reading from a drive as soon as media is inserted into the drive. As a result, the setup file of programs or music on audio media may start. This setting will disable AutoPlay for nonvolume devices, such as Media Transfer Protocol (MTP) devices.

Fix: F-82534r1181002_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> AutoPlay Policies >> Disallow Autoplay for nonvolume devices to "Enabled".

c

Windows Server 2025 default AutoRun behavior must be configured to prevent AutoRun commands.

RMF Control: CM-7
Severity: H
CCI: CCI-001764
Version: WN25-CC-000220
Vuln IDs: V-278100
Rule IDs: SV-278100r1181006_rule

Allowing AutoRun commands to execute may introduce malicious code to a system. Configuring this setting prevents AutoRun commands from executing.

Fix: F-82535r1181005_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> AutoPlay Policies >> Set the default behavior for AutoRun to "Enabled" with "Do not execute any autorun commands" selected.

c

Windows Server 2025 AutoPlay must be disabled for all drives.

RMF Control: CM-7
Severity: H
CCI: CCI-001764
Version: WN25-CC-000230
Vuln IDs: V-278101
Rule IDs: SV-278101r1181009_rule

Allowing AutoPlay to execute may introduce malicious code to a system. AutoPlay begins reading from a drive as soon media is inserted into the drive. As a result, the setup file of programs or music on audio media may start. By default, AutoPlay is disabled on removable drives, such as the floppy disk drive (but not the CD-ROM drive) and on network drives. Enabling this policy disables AutoPlay on all drives.

Fix: F-82536r1181008_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> AutoPlay Policies >> Turn off AutoPlay to "Enabled" with "All Drives" selected.

b

Windows Server 2025 administrator accounts must not be enumerated during elevation.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-CC-000240
Vuln IDs: V-278102
Rule IDs: SV-278102r1181012_rule

Enumeration of administrator accounts when elevating can provide part of the logon information to an unauthorized user. This setting configures the system to always require users to type in a username and password to elevate a running application.

Fix: F-82537r1181011_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Credential User Interface >> Enumerate administrator accounts on elevation to "Disabled".

b

Windows Server 2025 Telemetry must be configured to limit diagnostic data sent to Microsoft.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000250
Vuln IDs: V-278103
Rule IDs: SV-278103r1268251_rule

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "send required diagnostic data" option for Allow Diagnostic Data configures the lowest amount of data, effectively none outside of the Malicious Software Removal Tool (MSRT), Defender, and Diagnostic Data client settings. "Optional Diagnostic Data" sends basic diagnostic and usage data and may be required to support some Microsoft services.

Fix: F-82538r1181981_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection and Preview Build >> Allow Diagnostic Data to "Enabled" with "Send required diagnostic data" selected or "Diagnostic data off (not recommended)".

a

Windows Server 2025 Windows Update must not obtain updates from other PCs on the internet.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN25-CC-000260
Vuln IDs: V-278104
Rule IDs: SV-278104r1268251_rule

Windows Update can obtain updates from additional sources instead of Microsoft. In addition to Microsoft, updates can be obtained from and sent to PCs on the local network as well as on the internet. This is part of the Windows Update trusted process; however, to minimize outside exposure, obtaining updates from or sending to systems on the internet must be prevented.

Fix: F-82539r1181017_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> Download Mode to "Enabled" with any option except "Internet" selected. Acceptable selections include: Bypass (100) Group (2) HTTP only (0) LAN (1) Simple (99)

b

Windows Server 2025 Application event log size must be configured to 32768 KB or greater.

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN25-CC-000270
Vuln IDs: V-278105
Rule IDs: SV-278105r1181812_rule

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.

Fix: F-82540r1181020_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Application >> Specify the maximum log file size (KB) to "Enabled" with a "Maximum Log Size (KB)" of "32768" or greater.

b

Windows Server 2025 Security event log size must be configured to a value that holds at least one week of audit records.

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN25-CC-000280
Vuln IDs: V-278106
Rule IDs: SV-278106r1211154_rule

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel. System administrators (SAs) must monitor the volume of security event audit records and increase the registry value for the log size as needed.

Fix: F-82541r1211153_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Security >> Specify the maximum log file size (KB) to "Enabled" with a "Maximum Log Size (KB)" of a value that will contain one week of audit records or greater. Note: The registry entry value in the Check is an example; the value must equal at least one week's worth of records in the environment.

b

Windows Server 2025 System event log size must be configured to 32768 KB or greater.

RMF Control: AU-4
Severity: M
CCI: CCI-001849
Version: WN25-CC-000290
Vuln IDs: V-278107
Rule IDs: SV-278107r1181816_rule

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.

Fix: F-82542r1181026_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> System >> Specify the maximum log file size (KB) to "Enabled" with a "Maximum Log Size (KB)" of "32768" or greater.

b

Windows Server 2025 Microsoft Defender antivirus SmartScreen must be enabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000300
Vuln IDs: V-278108
Rule IDs: SV-278108r1181818_rule

Microsoft Defender antivirus SmartScreen helps protect systems from programs downloaded from the internet that may be malicious. Enabling SmartScreen can block potentially malicious programs or warn users.

Fix: F-82543r1181029_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> Configure Windows Defender SmartScreen to "Enabled" with either option "Warn" or "Warn and prevent bypass" selected. Windows Server 2025 includes duplicate policies for this setting. It can also be configured under Computer Configuration >> Administrative Templates >> Windows Components >> Windows Defender SmartScreen >> Explorer.

b

Windows Server 2025 Explorer Data Execution Prevention must be enabled.

RMF Control: SI-16
Severity: M
CCI: CCI-002824
Version: WN25-CC-000310
Vuln IDs: V-278109
Rule IDs: SV-278109r1182061_rule

Data Execution Prevention provides additional protection by performing checks on memory to help prevent malicious code from running. This setting will prevent Data Execution Prevention from being turned off for File Explorer.

Fix: F-82544r1182060_fix

The default behavior is for data execution prevention to be turned on for File Explorer. To correct this, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> Turn off Data Execution Prevention for Explorer to "Not Configured" or "Disabled".

a

Windows Server 2025 Turning off File Explorer heap termination on corruption must be disabled.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN25-CC-000320
Vuln IDs: V-278110
Rule IDs: SV-278110r1268251_rule

Legacy plug-in applications may continue to function when a File Explorer session has become corrupt. Disabling this feature will prevent this.

Fix: F-82545r1182062_fix

The default behavior is for File Explorer heap termination on corruption to be disabled. To correct this, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> Turn off heap termination on corruption to "Not Configured" or "Disabled".

b

Windows Server 2025 File Explorer shell protocol must run in protected mode.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000330
Vuln IDs: V-278111
Rule IDs: SV-278111r1268251_rule

The shell protocol will limit the set of folders that applications can open when run in protected mode. Restricting files an application can open to a limited set of folders increases the security of Windows.

Fix: F-82546r1182064_fix

The default behavior is for shell protected mode to be turned on for File Explorer. To correct this, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> File Explorer >> Turn off shell protocol protected mode to "Not Configured" or "Disabled".

b

Windows Server 2025 must not save passwords in the Remote Desktop Client.

RMF Control
Severity: M
CCI: CCI-004895
Version: WN25-CC-000340
Vuln IDs: V-278112
Rule IDs: SV-278112r1181042_rule

Saving passwords in the Remote Desktop Client could allow an unauthorized user to establish a remote desktop session to another system. The system must be configured to prevent users from saving passwords in the Remote Desktop Client. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Fix: F-82547r1181041_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Connection Client >> Do not allow passwords to be saved to "Enabled".

b

Windows Server 2025 Remote Desktop Services must prevent drive redirection.

RMF Control: SC-4
Severity: M
CCI: CCI-001090
Version: WN25-CC-000350
Vuln IDs: V-278113
Rule IDs: SV-278113r1268233_rule

Preventing users from sharing the local drives on their client computers with Remote Session Hosts that they access helps reduce possible exposure of sensitive data.

Fix: F-82548r1181044_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Device and Resource Redirection >> Do not allow drive redirection to "Enabled".

b

Windows Server 2025 Remote Desktop Services must always prompt a client for passwords upon connection.

RMF Control
Severity: M
CCI: CCI-004895
Version: WN25-CC-000360
Vuln IDs: V-278114
Rule IDs: SV-278114r1181048_rule

This setting controls the ability of users to supply passwords automatically as part of their remote desktop connection. Disabling this setting would allow anyone to use the stored credentials in a connection item to connect to the terminal server. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Fix: F-82549r1181047_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security >> Always prompt for password upon connection to "Enabled".

b

Windows Server 2025 Remote Desktop Services must require secure Remote Procedure Call (RPC) communications.

RMF Control: AC-17
Severity: M
CCI: CCI-000068
Version: WN25-CC-000370
Vuln IDs: V-278115
Rule IDs: SV-278115r1268222_rule

Allowing unsecure RPC communication exposes the system to man-in-the-middle attacks and data disclosure attacks. A man-in-the-middle attack occurs when an intruder captures packets between a client and server and modifies them before allowing the packets to be exchanged. Usually, the attacker will modify the information in the packets in an attempt to cause either the client or server to reveal sensitive information. Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000250-GPOS-00093

Fix: F-82550r1181050_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security >> Require secure RPC communication to "Enabled".

b

Windows Server 2025 Remote Desktop Services must be configured with the client connection encryption set to High Level.

RMF Control: AC-17
Severity: M
CCI: CCI-000068
Version: WN25-CC-000380
Vuln IDs: V-278116
Rule IDs: SV-278116r1268222_rule

Remote connections must be encrypted to prevent interception of data or sensitive information. Selecting "High Level" will ensure encryption of Remote Desktop Services sessions in both directions. Satisfies: SRG-OS-000033-GPOS-00014, SRG-OS-000250-GPOS-00093

Fix: F-82551r1181053_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security >> Set client connection encryption level to "Enabled" with "High Level" selected.

b

Windows Server 2025 must prevent attachments from being downloaded from RSS feeds.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000390
Vuln IDs: V-278117
Rule IDs: SV-278117r1268251_rule

Attachments from RSS feeds may not be secure. This setting will prevent attachments from being downloaded from RSS feeds.

Fix: F-82552r1181056_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> RSS Feeds >> Prevent downloading of enclosures to "Enabled".

b

Windows Server 2025 must disable Basic authentication for RSS feeds over HTTP.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000400
Vuln IDs: V-278118
Rule IDs: SV-278118r1182067_rule

Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.

Fix: F-82553r1182066_fix

The default behavior is for the Windows RSS platform to not use Basic authentication over HTTP connections. To correct this, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> RSS Feeds >> Turn on Basic feed authentication over HTTP to "Not Configured" or "Disabled".

b

Windows Server 2025 must prevent Indexing of encrypted files.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-CC-000410
Vuln IDs: V-278119
Rule IDs: SV-278119r1181063_rule

Indexing of encrypted files may expose sensitive data. This setting prevents encrypted files from being indexed.

Fix: F-82554r1181062_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Search >> Allow indexing of encrypted files to "Disabled".

b

Windows Server 2025 must prevent users from changing installation options.

RMF Control
Severity: M
CCI: CCI-003980
Version: WN25-CC-000420
Vuln IDs: V-278120
Rule IDs: SV-278120r1181066_rule

Installation options for applications are typically controlled by administrators. This setting prevents users from changing installation options that may bypass security features.

Fix: F-82555r1181065_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> Allow user control over installs to "Disabled".

c

Windows Server 2025 must disable the Windows Installer Always install with elevated privileges option.

RMF Control
Severity: H
CCI: CCI-003980
Version: WN25-CC-000430
Vuln IDs: V-278121
Rule IDs: SV-278121r1181069_rule

Standard user accounts must not be granted elevated privileges. Enabling Windows Installer to elevate privileges when installing applications can allow malicious persons and applications to gain full control of a system.

Fix: F-82556r1181068_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> Always install with elevated privileges to "Disabled".

b

Windows Server 2025 users must be notified if a web-based program attempts to install software.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000440
Vuln IDs: V-278122
Rule IDs: SV-278122r1268251_rule

Web-based programs may attempt to install malicious software on a system. Ensuring users are notified if a web-based program attempts to install software allows them to refuse the installation.

Fix: F-82557r1182068_fix

The default behavior is for Internet Explorer to warn users and select whether to allow or refuse installation when a web-based program attempts to install software on the system. To correct this, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> Prevent Internet Explorer security prompt for Windows Installer scripts to "Not Configured" or "Disabled".

b

Windows Server 2025 must disable automatically signing in the last interactive user after a system-initiated restart.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-CC-000450
Vuln IDs: V-278123
Rule IDs: SV-278123r1181075_rule

Windows can be configured to automatically sign the user back in after a Windows Update restart. Some protections are in place to help ensure this is done in a secure fashion; however, disabling this will prevent the caching of credentials for this purpose and also ensure the user is aware of the restart.

Fix: F-82558r1181074_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Logon Options >> Sign-in and lock last interactive user automatically after a restart to "Disabled".

b

Windows Server 2025 PowerShell script block logging must be enabled.

RMF Control: AU-3
Severity: M
CCI: CCI-000135
Version: WN25-CC-000460
Vuln IDs: V-278124
Rule IDs: SV-278124r1181078_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Enabling PowerShell script block logging will record detailed information from the processing of PowerShell commands and scripts. This can provide additional detail when malware has run on a system.

Fix: F-82559r1181077_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows PowerShell >> Turn on PowerShell Script Block Logging to "Enabled".

c

Windows Server 2025 Windows Remote Management (WinRM) client must not use Basic authentication.

RMF Control: MA-4
Severity: H
CCI: CCI-000877
Version: WN25-CC-000470
Vuln IDs: V-278125
Rule IDs: SV-278125r1181081_rule

Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.

Fix: F-82560r1181080_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> Allow Basic authentication to "Disabled".

b

Windows Server 2025 Windows Remote Management (WinRM) client must not allow unencrypted traffic.

RMF Control: MA-4
Severity: M
CCI: CCI-002890
Version: WN25-CC-000480
Vuln IDs: V-278126
Rule IDs: SV-278126r1181084_rule

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this. Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174

Fix: F-82561r1181083_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> Allow unencrypted traffic to "Disabled".

b

Windows Server 2025 Windows Remote Management (WinRM) client must not use Digest authentication.

RMF Control: MA-4
Severity: M
CCI: CCI-000877
Version: WN25-CC-000490
Vuln IDs: V-278127
Rule IDs: SV-278127r1181087_rule

Digest authentication is not as strong as other options and may be subject to man-in-the-middle attacks. Disallowing Digest authentication will reduce this potential.

Fix: F-82562r1181086_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Client >> Disallow Digest authentication to "Enabled".

c

Windows Server 2025 Windows Remote Management (WinRM) service must not use Basic authentication.

RMF Control: MA-4
Severity: H
CCI: CCI-000877
Version: WN25-CC-000500
Vuln IDs: V-278128
Rule IDs: SV-278128r1181090_rule

Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.

Fix: F-82563r1181089_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> Allow Basic authentication to "Disabled".

b

Windows Server 2025 Windows Remote Management (WinRM) service must not allow unencrypted traffic.

RMF Control: MA-4
Severity: M
CCI: CCI-002890
Version: WN25-CC-000510
Vuln IDs: V-278129
Rule IDs: SV-278129r1181093_rule

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this. Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174

Fix: F-82564r1181092_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> Allow unencrypted traffic to "Disabled".

b

Windows Server 2025 Windows Remote Management (WinRM) service must not store RunAs credentials.

RMF Control
Severity: M
CCI: CCI-004895
Version: WN25-CC-000520
Vuln IDs: V-278130
Rule IDs: SV-278130r1181925_rule

Storage of administrative credentials could allow unauthorized access. Disallowing the storage of RunAs credentials for WinRM will prevent them from being used with plug-ins. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Fix: F-82565r1181095_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> Disallow WinRM from storing RunAs credentials to "Enabled".

b

Windows Server 2025 Kerberos user logon restrictions must be enforced.

RMF Control: IA-2
Severity: M
CCI: CCI-001941
Version: WN25-DC-000020
Vuln IDs: V-278133
Rule IDs: SV-278133r1182071_rule

This policy setting determines whether the Kerberos Key Distribution Center (KDC) validates every request for a session ticket against the user rights policy of the target computer. The policy is enabled by default, which is the most secure setting for validating that access to target resources is not circumvented. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

Fix: F-82568r1181104_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> Enforce user logon restrictions to "Enabled".

b

Windows Server 2025 Kerberos service ticket maximum lifetime must be limited to 600 minutes or less.

RMF Control: IA-2
Severity: M
CCI: CCI-001941
Version: WN25-DC-000030
Vuln IDs: V-278134
Rule IDs: SV-278134r1182073_rule

This setting determines the maximum amount of time (in minutes) that a granted session ticket can be used to access a particular service. Session tickets are used only to authenticate new connections with servers. Ongoing operations are not interrupted if the session ticket used to authenticate the connection expires during the connection. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

Fix: F-82569r1181107_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> Maximum lifetime for service ticket to a maximum of "600" minutes, but not "0", which equates to "Ticket doesn't expire".

b

Windows Server 2025 Kerberos user ticket lifetime must be limited to 10 hours or less.

RMF Control: IA-2
Severity: M
CCI: CCI-001941
Version: WN25-DC-000040
Vuln IDs: V-278135
Rule IDs: SV-278135r1182075_rule

In Kerberos, there are two types of tickets: Ticket Granting Tickets (TGTs) and Service Tickets. Kerberos tickets have a limited lifetime so the time an attacker has to implement an attack is limited. This policy controls how long TGTs can be renewed. With Kerberos, the user's initial authentication to the domain controller results in a TGT, which is then used to request Service Tickets to resources. Upon startup, each computer gets a TGT before requesting a service ticket to the domain controller and any other computers it needs to access. For services that start up under a specified user account, users must always get a TGT first and then get Service Tickets to all computers and services accessed. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

Fix: F-82570r1181110_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> Maximum lifetime for user ticket to a maximum of "10" hours but not "0", which equates to "Ticket doesn't expire".

b

Windows Server 2025 Kerberos policy user ticket renewal maximum lifetime must be limited to seven days or less.

RMF Control: IA-2
Severity: M
CCI: CCI-001941
Version: WN25-DC-000050
Vuln IDs: V-278136
Rule IDs: SV-278136r1182077_rule

This setting determines the period of time (in days) during which a user's Ticket Granting Ticket (TGT) may be renewed. This security configuration limits the amount of time an attacker has to crack the TGT and gain access. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

Fix: F-82571r1181113_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> Maximum lifetime for user ticket renewal to a maximum of "7" days or less.

b

Windows Server 2025 computer clock synchronization tolerance must be limited to five minutes or less.

RMF Control: IA-2
Severity: M
CCI: CCI-001941
Version: WN25-DC-000060
Vuln IDs: V-278137
Rule IDs: SV-278137r1182079_rule

This setting determines the maximum time difference (in minutes) that Kerberos will tolerate between the time on a client's clock and the time on a server's clock while still considering the two clocks synchronous. To prevent replay attacks, Kerberos uses timestamps as part of its protocol definition. For timestamps to work properly, the clocks of the client and the server must be in sync as much as possible. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

Fix: F-82572r1181116_fix

Configure the policy value in the Default Domain Policy for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> Maximum tolerance for computer clock synchronization to a maximum of "5" minutes or less.

c

Windows Server 2025 permissions on the Active Directory data files must only allow system administrators (SAs) access.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN25-DC-000070
Vuln IDs: V-278138
Rule IDs: SV-278138r1182081_rule

Improper access permissions for directory data-related files could allow unauthorized users to read, modify, or delete directory data or audit trails. Satisfies: SRG-OS-000324-GPOS-00125, SRG-OS-000206-GPOS-00084

Fix: F-82573r1181119_fix

Maintain the permissions on NTDS database and log files as follows: NT AUTHORITY\SYSTEM:(I)(F) BUILTIN\Administrators:(I)(F) (I) - permission inherited from parent container (F) - full access

b

Windows Server 2025 must be configured to audit Account Management - Computer Account Management successes.

RMF Control: AC-2
Severity: M
CCI: CCI-000018
Version: WN25-DC-000230
Vuln IDs: V-278154
Rule IDs: SV-278154r1182114_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Computer Account Management records events such as creating, changing, deleting, renaming, disabling, or enabling computer accounts. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221

Fix: F-82589r1181167_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Account Management >> Audit Computer Account Management with Success selected.

b

Windows Server 2025 must be configured to audit DS Access - Directory Service Access successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-DC-000240
Vuln IDs: V-278155
Rule IDs: SV-278155r1182116_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Directory Service Access records events related to users accessing an Active Directory object. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82590r1181170_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> DS Access >> Directory Service Access with Success selected.

b

Windows Server 2025 must be configured to audit DS Access - Directory Service Access failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-DC-000250
Vuln IDs: V-278156
Rule IDs: SV-278156r1182118_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Directory Service Access records events related to users accessing an Active Directory object. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82591r1181173_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> DS Access >> Directory Service Access with "Failure" selected.

b

Windows Server 2025 must be configured to audit DS Access - Directory Service Changes successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-DC-000260
Vuln IDs: V-278157
Rule IDs: SV-278157r1182120_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Directory Service Changes records events related to changes made to objects in Active Directory Domain Services. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82592r1181176_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> DS Access >> Directory Service Changes with "Success" selected.

b

Windows Server 2025 must be configured to audit DS Access - Directory Service Changes failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-DC-000270
Vuln IDs: V-278158
Rule IDs: SV-278158r1182122_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Audit Directory Service Changes records events related to changes made to objects in Active Directory Domain Services. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000468-GPOS-00212

Fix: F-82593r1181179_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> DS Access >> Directory Service Changes with "Failure" selected.

b

Windows Server 2025 domain controllers must require LDAP access signing.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-DC-000320
Vuln IDs: V-278163
Rule IDs: SV-278163r1266515_rule

Unsigned network traffic is susceptible to man-in-the-middle attacks, where an intruder captures packets between the server and the client and modifies them before forwarding them to the client. In the case of an LDAP server, this means that an attacker could cause a client to make decisions based on false records from the LDAP directory. The risk of an attacker pulling this off can be decreased by implementing strong physical security measures to protect the network infrastructure. Furthermore, implementing Internet Protocol security (IPsec) authentication header (AH) mode, which performs mutual authentication and packet integrity for IP traffic, can make all types of man-in-the-middle attacks extremely difficult. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82598r1266514_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain controller: LDAP server signing requirements Enforcement to "Not Configured" or "Enabled". Note: For the Windows Server 2025 security policy "Domain controller: LDAP server signing requirements Enforcement", configuring the setting to "Not Configured" (Default) or "Enabled" results in the same behavior.

b

Windows Server 2025 domain controllers must be configured to allow reset of machine account passwords.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-DC-000330
Vuln IDs: V-278164
Rule IDs: SV-278164r1268251_rule

Enabling this setting on all domain controllers in a domain prevents domain members from changing their computer account passwords. If these passwords are weak or compromised, the inability to change them may leave these computers vulnerable.

Fix: F-82599r1181197_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain controller: Refuse machine account password changes to "Disabled".

b

The Windows Server 2025 "Access this computer from the network" user right must only be assigned to the Administrators, Authenticated Users, and Enterprise Domain Controllers groups on domain controllers.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000340
Vuln IDs: V-278165
Rule IDs: SV-278165r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Access this computer from the network" right may access resources on the system, and this right must be limited to those requiring it.

Fix: F-82600r1181824_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Access this computer from the network to include only the following accounts or groups: - Administrators. - Authenticated Users. - Enterprise Domain Controllers.

b

The Windows Server 2025 "Add workstations to domain" user right must only be assigned to the Administrators group on domain controllers.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-DC-000350
Vuln IDs: V-278166
Rule IDs: SV-278166r1182138_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Add workstations to domain" right may add computers to a domain. This could result in unapproved or incorrectly configured systems being added to a domain.

Fix: F-82601r1181827_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Add workstations to domain to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Allow log on through Remote Desktop Services" user right must only be assigned to the Administrators group on domain controllers.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000360
Vuln IDs: V-278167
Rule IDs: SV-278167r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Allow log on through Remote Desktop Services" user right can access a system through Remote Desktop.

Fix: F-82602r1181830_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Allow log on through Remote Desktop Services to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Deny access to this computer from the network" user right on domain controllers must be configured to prevent unauthenticated access.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000370
Vuln IDs: V-278168
Rule IDs: SV-278168r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny access to this computer from the network" user right defines the accounts that are prevented from logging on from the network. The Guests group must be assigned this right to prevent unauthenticated access.

Fix: F-82603r1181833_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny access to this computer from the network to include the following: - Guests Group.

b

The Windows Server 2025 "Deny log on as a batch job" user right on domain controllers must be configured to prevent unauthenticated access.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000380
Vuln IDs: V-278169
Rule IDs: SV-278169r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on as a batch job" user right defines accounts that are prevented from logging on to the system as a batch job, such as Task Scheduler. The Guests group must be assigned to prevent unauthenticated access.

Fix: F-82604r1181836_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on as a batch job to include the following: - Guests Group.

b

The Windows Server 2025 "Deny log on as a service" user right must be configured to include no accounts or groups (blank) on domain controllers.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000390
Vuln IDs: V-278170
Rule IDs: SV-278170r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on as a service" user right defines accounts that are denied logon as a service. Incorrect configurations could prevent services from starting and result in a denial of service.

Fix: F-82605r1181215_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on as a service to include no entries (blank).

b

The Windows Server 2025 "Deny log on locally" user right on domain controllers must be configured to prevent unauthenticated access.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000400
Vuln IDs: V-278171
Rule IDs: SV-278171r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on locally" user right defines accounts that are prevented from logging on interactively. The Guests group must be assigned this right to prevent unauthenticated access.

Fix: F-82606r1181840_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on locally to include the following: - Guests Group.

b

Windows Server 2025 must be configured for name-based strong mappings for certificates.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-DC-000406
Vuln IDs: V-278173
Rule IDs: SV-278173r1268226_rule

Weak mappings give rise to security vulnerabilities and demand hardening measures. Certificate names must be correctly mapped to the intended user account in Active Directory. A lack of strong name-based mappings allows certain weak certificate mappings, such as Issuer/Subject AltSecID and User Principal Names (UPN) mappings, to be treated as strong mappings.

Fix: F-82608r1181931_fix

Configure the policy value for Computer Configuration >> Administrative Template >> System >> KDC >> Allow name-based strong mappings for certificates to "Enabled". The policy must contain exactly one certificate thumbprint per rule, with each rule represented as a tuple. Thumbprints must be unique and cannot be repeated in multiple rules. The sections of each tuple that are separated by semi-colons must be in the stated order, while the fields separated by commas can be in any order. The rules themselves are separated by new lines.

b

The Windows Server 2025 "Deny log on through Remote Desktop Services" user right on domain controllers must be configured to prevent unauthenticated access.

RMF Control: AC-17
Severity: M
CCI: CCI-002314
Version: WN25-DC-000410
Vuln IDs: V-278174
Rule IDs: SV-278174r1268238_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on through Remote Desktop Services" user right defines the accounts that are prevented from logging on using Remote Desktop Services. The Guests group must be assigned this right to prevent unauthenticated access.

Fix: F-82609r1181845_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on through Remote Desktop Services to include the following: - Guests Group.

b

The Windows Server 2025 "Enable computer and user accounts to be trusted for delegation" user right must only be assigned to the Administrators group on domain controllers.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-DC-000420
Vuln IDs: V-278175
Rule IDs: SV-278175r1182148_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Enable computer and user accounts to be trusted for delegation" user right allows the "Trusted for Delegation" setting to be changed. This could allow unauthorized users to impersonate other users.

Fix: F-82610r1181848_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Enable computer and user accounts to be trusted for delegation to include only the following accounts or groups: - Administrators.

b

Windows Server 2025 local administrator accounts must have their privileged token filtered to prevent elevated privileges from being used over the network on domain-joined member servers.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-MS-000020
Vuln IDs: V-278178
Rule IDs: SV-278178r1182282_rule

A compromised local administrator account can provide means for an attacker to move laterally between domain systems. With User Account Control enabled, filtering the privileged token for local administrator accounts will prevent the elevated privileges of these accounts from being used over the network.

Fix: F-82613r1181239_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> Apply UAC restrictions to local accounts on network logons to "Enabled". This policy setting requires the installation of the SecGuide custom templates included with the STIG package. "SecGuide.admx" and " SecGuide.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Windows Server 2025 local users on domain-joined member servers must not be enumerated.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: WN25-MS-000030
Vuln IDs: V-278179
Rule IDs: SV-278179r1182284_rule

The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to authorized personnel.

Fix: F-82614r1181242_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Enumerate local users on domain-joined computers to "Disabled".

b

Windows Server 2025 must restrict unauthenticated Remote Procedure Call (RPC) clients from connecting to the RPC server on domain-joined member servers and stand-alone or nondomain-joined systems.

RMF Control: IA-3
Severity: M
CCI: CCI-001967
Version: WN25-MS-000040
Vuln IDs: V-278180
Rule IDs: SV-278180r1182286_rule

Unauthenticated RPC clients may allow anonymous access to sensitive information. Configuring RPC to restrict unauthenticated RPC clients from connecting to the RPC server will prevent anonymous connections.

Fix: F-82615r1181245_fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Procedure Call >> Restrict Unauthenticated RPC clients to "Enabled" with "Authenticated" selected.

b

Windows Server 2025 must limit the caching of logon credentials to four or less on domain-joined member servers.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-MS-000050
Vuln IDs: V-278181
Rule IDs: SV-278181r1268251_rule

The default Windows configuration caches the last logon credentials for users who log on interactively to a system. This feature is provided for system availability reasons, such as the user's machine being disconnected from the network or domain controllers being unavailable. Even though the credential cache is well protected, if a system is attacked, an unauthorized individual may isolate the password to a domain user account using a password-cracking program and gain access to the domain.

Fix: F-82616r1181248_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Interactive Logon: Number of previous logons to cache (in case Domain Controller is not available) to "4" logons or less.

b

Windows Server 2025 must restrict remote calls to the Security Account Manager (SAM) to Administrators on domain-joined member servers and stand-alone or nondomain-joined systems.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-MS-000060
Vuln IDs: V-278182
Rule IDs: SV-278182r1182290_rule

The Windows SAM stores users' passwords. Restricting Remote Procedure Call (RPC) connections to the SAM to Administrators helps protect those credentials.

Fix: F-82617r1181251_fix

Navigate to the policy Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Restrict clients allowed to make remote calls to SAM. Select "Edit Security" to configure the "Security descriptor:". Add "Administrators" in "Group or user names:" if it is not already listed (this is the default). Select "Administrators" in "Group or user names:". Select "Allow" for "Remote Access" in "Permissions for "Administrators". Click "OK". The "Security descriptor:" must be populated with "O:BAG:BAD:(A;;RC;;;BA) for the policy to be enforced.

b

Windows Server 2025 "Access this computer from the network" user right must only be assigned to the Administrators and Authenticated Users groups on domain-joined member servers and stand-alone or nondomain-joined systems.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-MS-000070
Vuln IDs: V-278183
Rule IDs: SV-278183r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Access this computer from the network" user right may access resources on the system, and this right must be limited to those requiring it.

Fix: F-82618r1181859_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Access this computer from the network to include only the following accounts or groups: - Administrators. - Authenticated Users.

b

The Windows Server 2025 "Deny access to this computer from the network" user right on domain-joined member servers must be configured to prevent access from highly privileged domain accounts and local accounts and from unauthenticated access on all systems.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-MS-000080
Vuln IDs: V-278184
Rule IDs: SV-278184r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny access to this computer from the network" user right defines the accounts that are prevented from logging on from the network. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Local accounts on domain-joined systems must also be assigned this right to decrease the risk of lateral movement resulting from credential theft attacks. The Guests group must be assigned this right to prevent unauthenticated access.

Fix: F-82619r1181257_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny access to this computer from the network to include the following: Domain Systems Only: - Enterprise Admins group. - Domain Admins group. - "Local account and member of Administrators group" or "Local account" (see Note below). All Systems: - Guests group. Note: These are built-in security groups. "Local account" is more restrictive but may cause issues on servers such as systems that provide failover clustering.

b

Windows Server 2025 Deny log on as a batch job user right on domain-joined member servers must be configured to prevent access from highly privileged domain accounts and from unauthenticated access on all systems.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-MS-000090
Vuln IDs: V-278185
Rule IDs: SV-278185r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on as a batch job" user right defines accounts that are prevented from logging on to the system as a batch job, such as Task Scheduler. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. The Guests group must be assigned to prevent unauthenticated access.

Fix: F-82620r1181260_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on as a batch job to include the following: Domain Systems Only: - Enterprise Admins Group. - Domain Admins Group. All Systems: - Guests Group.

b

The Windows Server 2025 "Deny log on as a service" user right on domain-joined member servers must be configured to prevent access from highly privileged domain accounts. No other groups or accounts must be assigned this right.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-MS-000100
Vuln IDs: V-278186
Rule IDs: SV-278186r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on as a service" user right defines accounts that are denied logon as a service. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Incorrect configurations could prevent services from starting and result in a denial of service.

Fix: F-82621r1182298_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on as a service to include the following: Domain systems: - Enterprise Admins Group. - Domain Admins Group.

b

The Windows Server 2025 "Deny log on locally" user right on domain-joined member servers must be configured to prevent access from highly privileged domain accounts and from unauthenticated access on all systems.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-MS-000110
Vuln IDs: V-278187
Rule IDs: SV-278187r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on locally" user right defines accounts that are prevented from logging on interactively. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. The Guests group must be assigned this right to prevent unauthenticated access.

Fix: F-82622r1181266_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on locally to include the following: Domain Systems Only: - Enterprise Admins Group. - Domain Admins Group. All Systems: - Guests Group.

b

The Windows Server 2025 "Deny log on through Remote Desktop Services" user right on domain-joined member servers must be configured to prevent access from highly privileged domain accounts and all local accounts and from unauthenticated access on all systems.

RMF Control: AC-17
Severity: M
CCI: CCI-002314
Version: WN25-MS-000120
Vuln IDs: V-278188
Rule IDs: SV-278188r1268238_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Deny log on through Remote Desktop Services" user right defines the accounts that are prevented from logging on using Remote Desktop Services. In an Active Directory Domain, denying logons to the Enterprise Admins and Domain Admins groups on lower-trust systems helps mitigate the risk of privilege escalation from credential theft attacks, which could lead to the compromise of an entire domain. Local accounts on domain-joined systems must also be assigned this right to decrease the risk of lateral movement resulting from credential theft attacks. The Guests group must be assigned this right to prevent unauthenticated access.

Fix: F-82623r1181269_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Deny log on through Remote Desktop Services to include the following: Domain Systems Only: - Enterprise Admins group. - Domain Admins group. - Local account (see Note below). All Systems: - Guests group. Note: "Local account" refers to the Windows built-in security group.

b

The Windows Server 2025 "Enable computer and user accounts to be trusted for delegation" user right must not be assigned to any groups or accounts on domain-joined member servers and stand-alone or nondomain-joined systems.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-MS-000130
Vuln IDs: V-278189
Rule IDs: SV-278189r1182305_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Enable computer and user accounts to be trusted for delegation" user right allows the "Trusted for Delegation" setting to be changed. This could allow unauthorized users to impersonate other users.

Fix: F-82624r1181272_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Enable computer and user accounts to be trusted for delegation to be defined but containing no entries (blank).

b

Windows Server 2025 must have the DoW Root Certificate Authority (CA) certificates installed in the Trusted Root Store.

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN25-PK-000010
Vuln IDs: V-278192
Rule IDs: SV-278192r1256723_rule

To ensure secure DoW websites and DoW-signed code are properly validated, the system must trust the DoW Root CAs. The DoW root certificates will ensure that the trust chain is established for server certificates issued from the DoW CAs. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182, SRG-OS-000775-GPOS-00230

Fix: F-82627r1256722_fix

Install valid and unexpired DoW Root CA certificates. DOD Root CA 3 DOD Root CA 5 DOD Root CA 6 The InstallRoot tool is available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files. Certificate bundles published by the PKI can be found at https://crl.gds.disa.mil/.

b

Windows Server 2025 must have the DoW Interoperability Root Certificate Authority (CA) cross-certificates installed in the Untrusted Certificates Store on unclassified systems.

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN25-PK-000020
Vuln IDs: V-278193
Rule IDs: SV-278193r1256726_rule

To ensure users do not experience denial of service when performing certificate-based authentication to DoW websites due to the system chaining to a root other than DoW Root CAs, the DoW Interoperability Root CA cross-certificates must be installed in the Untrusted Certificate Store. This requirement only applies to unclassified systems. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182

Fix: F-82628r1256725_fix

Install valid and unexpired DoW Interoperability Root CA cross-certificates on unclassified systems. The list below is not to be treated as exhaustive. The STIG should not be used as a definitive resource for the organizationally approved certificates for the systems. DoD Interoperability Root CA 2 Administrators must run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user. The FBCA Cross-Certificate Remover Tool and User Guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files. Certificate bundles published by the PKI can be found at https://crl.gds.disa.mil/.

b

Windows Server 2025 must have the US DoW CCEB Interoperability Root CA cross-certificates in the Untrusted Certificates Store on unclassified systems.

RMF Control: IA-5
Severity: M
CCI: CCI-000185
Version: WN25-PK-000030
Vuln IDs: V-278194
Rule IDs: SV-278194r1256729_rule

To ensure users do not experience denial of service when performing certificate-based authentication to DoW websites due to the system chaining to a root other than DoW Root CAs, the US DoW CCEB Interoperability Root CA cross-certificates must be installed in the Untrusted Certificate Store. This requirement only applies to unclassified systems. Satisfies: SRG-OS-000066-GPOS-00034, SRG-OS-000403-GPOS-00182

Fix: F-82629r1256728_fix

Install valid and unexpired US DoW CCEB Interoperability Root CA cross-certificate on unclassified systems. The list below is not to be treated as exhaustive. The STIG should not be used as a definitive resource for the organizationally approved certificates for the systems. US DOD CCEB Interoperability Root CA 2 Administrators must run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user. The FBCA Cross-Certificate Remover Tool and User Guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files. Certificate bundles published by the PKI can be found at https://crl.gds.disa.mil/.

b

Windows Server 2025 must have the built-in guest account disabled.

RMF Control: IA-8
Severity: M
CCI: CCI-000804
Version: WN25-SO-000010
Vuln IDs: V-278195
Rule IDs: SV-278195r1181291_rule

A system faces an increased vulnerability threat if the built-in guest account is not disabled. This is a known account that exists on all Windows systems and cannot be deleted. This account is initialized during the installation of the operating system with no password assigned.

Fix: F-82630r1181290_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Accounts: Guest account status to "Disabled".

c

Windows Server 2025 must prevent local accounts with blank passwords from being used from the network.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN25-SO-000020
Vuln IDs: V-278196
Rule IDs: SV-278196r1268251_rule

An account without a password can allow unauthorized access to a system as only the username would be required. Password policies must prevent accounts with blank passwords from existing on a system. However, if a local account with a blank password does exist, enabling this setting will prevent network access, limiting the account to local console logon only.

Fix: F-82631r1181293_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Accounts: Limit local account use of blank passwords to console logon only to "Enabled".

b

The Windows Server 2025 built-in administrator account must be renamed.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000030
Vuln IDs: V-278197
Rule IDs: SV-278197r1268251_rule

The built-in administrator account is a well-known account subject to attack. Renaming this account to an unidentified name improves the protection of this account and the system.

Fix: F-82632r1181296_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Accounts: Rename administrator account to a name other than "Administrator".

b

The Windows Server 2025 built-in guest account must be renamed.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000040
Vuln IDs: V-278198
Rule IDs: SV-278198r1268251_rule

The built-in guest account is a well-known user account on all Windows systems and, as initially installed, does not require a password. This can allow access to system resources by unauthorized users. Renaming this account to an unidentified name improves the protection of this account and the system.

Fix: F-82633r1181299_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Accounts: Rename guest account to a name other than "Guest".

b

Windows Server 2025 must force audit policy subcategory settings to override audit policy category settings.

RMF Control: AU-12
Severity: M
CCI: CCI-000169
Version: WN25-SO-000050
Vuln IDs: V-278199
Rule IDs: SV-278199r1268225_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. This setting allows administrators to enable more precise auditing capabilities.

Fix: F-82634r1181302_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Audit: Force audit policy subcategory settings (Windows 7 or later) to override audit policy category settings to "Enabled".

b

The Windows Server 2025 setting Domain member: Digitally encrypt or sign secure channel data (always) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000060
Vuln IDs: V-278200
Rule IDs: SV-278200r1181306_rule

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted and signed. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82635r1181305_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain member: Digitally encrypt or sign secure channel data (always) to "Enabled".

b

Windows Server 2025 setting Domain member: Digitally encrypt secure channel data (when possible) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000070
Vuln IDs: V-278201
Rule IDs: SV-278201r1181309_rule

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82636r1181308_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain member: Digitally encrypt secure channel data (when possible) to "Enabled".

b

The Windows Server 2025 setting Domain member: Digitally sign secure channel data (when possible) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000080
Vuln IDs: V-278202
Rule IDs: SV-278202r1181312_rule

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but the channel is not integrity checked. If this policy is enabled, outgoing secure channel traffic will be signed. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82637r1181311_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain member: Digitally sign secure channel data (when possible) to "Enabled".

b

Windows Server 2025 computer account password must not be prevented from being reset.

RMF Control: IA-3
Severity: M
CCI: CCI-001967
Version: WN25-SO-000090
Vuln IDs: V-278203
Rule IDs: SV-278203r1181315_rule

Computer account passwords are changed automatically on a regular basis. Disabling automatic password changes can make the system more vulnerable to malicious access. Frequent password changes can be a significant safeguard for the system. A new password for the computer account will be generated every 30 days.

Fix: F-82638r1181314_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain member: Disable machine account password changes to "Disabled".

b

Windows Server 2025 maximum age for machine account passwords must be configured to 30 days or less.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000100
Vuln IDs: V-278204
Rule IDs: SV-278204r1268251_rule

Computer account passwords are changed automatically on a regular basis. This setting controls the maximum password age that a machine account may have. This must be set to no more than 30 days, ensuring the machine changes its password monthly.

Fix: F-82639r1181317_fix

This is the default configuration for this setting (30 days). Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain member: Maximum machine account password age to "30" or less (excluding "0", which is unacceptable).

b

Windows Server 2025 must be configured to require a strong session key.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000110
Vuln IDs: V-278205
Rule IDs: SV-278205r1181321_rule

A computer connecting to a domain controller will establish a secure channel. The secure channel connection may be subject to compromise, such as hijacking or eavesdropping, if strong session keys are not used to establish the connection. Requiring strong session keys enforces 128-bit encryption between systems. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82640r1181320_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Domain member: Require strong (Windows 2000 or Later) session key to "Enabled".

b

Windows Server 2025 machine inactivity limit must be set to 15 minutes or less, locking the system with the screen saver.

RMF Control: AC-11
Severity: M
CCI: CCI-000056
Version: WN25-SO-000120
Vuln IDs: V-278206
Rule IDs: SV-278206r1181324_rule

Unattended systems are susceptible to unauthorized use and must be locked when unattended. The screen saver must be set at a maximum of 15 minutes and be password protected. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer. Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012

Fix: F-82641r1181323_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Interactive logon: Machine inactivity limit to "900" seconds or less, excluding "0", which is effectively disabled.

b

The Windows Server 2025 Smart Card removal option must be configured to Force Logoff or Lock Workstation.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000150
Vuln IDs: V-278209
Rule IDs: SV-278209r1268251_rule

Unattended systems are susceptible to unauthorized use and must be locked. Configuring a system to lock when a smart card is removed will ensure the system is inaccessible when unattended.

Fix: F-82644r1181332_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Interactive logon: Smart card removal behavior to "Lock Workstation" or "Force Logoff".

b

The Windows Server 2025 setting Microsoft network client: Digitally sign communications (always) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000160
Vuln IDs: V-278210
Rule IDs: SV-278210r1181336_rule

The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB client will only communicate with an SMB server that performs SMB packet signing. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82645r1181335_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Microsoft network client: Digitally sign communications (always) to "Enabled".

b

The Windows Server 2025 setting Microsoft network client: Digitally sign communications (if server agrees) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000170
Vuln IDs: V-278211
Rule IDs: SV-278211r1181339_rule

The server message block (SMB) protocol provides the basis for many network operations. If this policy is enabled, the SMB client will request packet signing when communicating with an SMB server that is enabled or required to perform SMB packet signing. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82646r1181338_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Microsoft network client: Digitally sign communications (if server agrees) to "Enabled".

b

Windows Server 2025 unencrypted passwords must not be sent to third-party Server Message Block (SMB) servers.

RMF Control: IA-5
Severity: M
CCI: CCI-000197
Version: WN25-SO-000180
Vuln IDs: V-278212
Rule IDs: SV-278212r1181342_rule

Some non-Microsoft SMB servers only support unencrypted (plain-text) password authentication. Sending plain-text passwords across the network when authenticating to an SMB server reduces the overall security of the environment. Check with the vendor of the SMB server to determine if there is a way to support encrypted password authentication.

Fix: F-82647r1181341_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Microsoft Network Client: Send unencrypted password to third-party SMB servers to "Disabled".

b

The Windows Server 2025 setting Microsoft network server: Digitally sign communications (always) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000190
Vuln IDs: V-278213
Rule IDs: SV-278213r1181345_rule

The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will only communicate with an SMB client that performs SMB packet signing. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82648r1181344_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Microsoft network server: Digitally sign communications (always) to "Enabled".

b

The Windows Server 2025 setting Microsoft network server: Digitally sign communications (if client agrees) must be configured to Enabled.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SO-000200
Vuln IDs: V-278214
Rule IDs: SV-278214r1181348_rule

The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will negotiate SMB packet signing as requested by the client. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

Fix: F-82649r1181347_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Microsoft network server: Digitally sign communications (if client agrees) to "Enabled".

c

Windows Server 2025 must not allow anonymous SID/Name translation.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN25-SO-000210
Vuln IDs: V-278215
Rule IDs: SV-278215r1268251_rule

Allowing anonymous SID/Name translation can provide sensitive information for accessing a system. Only authorized users must be able to perform such translations.

Fix: F-82650r1181350_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Allow anonymous SID/Name translation to "Disabled".

c

Windows Server 2025 must not allow anonymous enumeration of Security Account Manager (SAM) accounts.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN25-SO-000220
Vuln IDs: V-278216
Rule IDs: SV-278216r1268251_rule

Anonymous enumeration of SAM accounts allows anonymous logon users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system.

Fix: F-82651r1181353_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Do not allow anonymous enumeration of SAM accounts to "Enabled".

c

Windows Server 2025 must not allow anonymous enumeration of shares.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN25-SO-000230
Vuln IDs: V-278217
Rule IDs: SV-278217r1268233_rule

Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can provide a map of potential points to attack the system.

Fix: F-82652r1181356_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Do not allow anonymous enumeration of SAM accounts and shares to "Enabled".

b

Windows Server 2025 must be configured to prevent anonymous users from having the same permissions as the Everyone group.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000240
Vuln IDs: V-278218
Rule IDs: SV-278218r1268251_rule

Access by anonymous users must be restricted. If this setting is enabled, anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users must not have these permissions or rights.

Fix: F-82653r1181359_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Let Everyone permissions apply to anonymous users to "Disabled".

c

Windows Server 2025 must restrict anonymous access to Named Pipes and Shares.

RMF Control: SC-4
Severity: H
CCI: CCI-001090
Version: WN25-SO-000250
Vuln IDs: V-278219
Rule IDs: SV-278219r1268233_rule

Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restricts access to those defined in "Network access: Named Pipes that can be accessed anonymously" and "Network access: Shares that can be accessed anonymously", both of which must be blank under other requirements.

Fix: F-82654r1181362_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network access: Restrict anonymous access to Named Pipes and Shares to "Enabled".

b

Windows Server 2025 services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity instead of authenticating anonymously.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000260
Vuln IDs: V-278220
Rule IDs: SV-278220r1268251_rule

Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed to authenticate anonymously versus using the computer identity.

Fix: F-82655r1181365_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Allow Local System to use computer identity for NTLM to "Enabled".

b

Windows Server 2025 must prevent NTLM from falling back to a Null session.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000270
Vuln IDs: V-278221
Rule IDs: SV-278221r1268251_rule

NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.

Fix: F-82656r1181368_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Allow LocalSystem NULL session fallback to "Disabled".

b

Windows Server 2025 must prevent PKU2U authentication using online identities.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000280
Vuln IDs: V-278222
Rule IDs: SV-278222r1268251_rule

PKU2U is a peer-to-peer authentication protocol. This setting prevents online identities from authenticating to domain-joined systems. Authentication will be centrally managed with Windows user accounts.

Fix: F-82657r1181371_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Allow PKU2U authentication requests to this computer to use online identities to "Disabled".

b

Windows Server 2025 Kerberos encryption types must be configured to prevent the use of DES and RC4 encryption suites.

RMF Control: IA-7
Severity: M
CCI: CCI-000803
Version: WN25-SO-000290
Vuln IDs: V-278223
Rule IDs: SV-278223r1268232_rule

Certain encryption types are no longer considered secure. The DES and RC4 encryption suites must not be used for Kerberos encryption. Note: Organizations with domain controllers running earlier versions of Windows where RC4 encryption is enabled, which select "The other domain supports Kerberos AES Encryption" on domain trusts, may be required to allow client communication across the trust relationship.

Fix: F-82658r1181374_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Configure encryption types allowed for Kerberos to "Enabled" with only the following selected: AES128_HMAC_SHA1 AES256_HMAC_SHA1 Future encryption types Note: Organizations with domain controllers running earlier versions of Windows where RC4 encryption is enabled, which select "The other domain supports Kerberos AES Encryption" on domain trusts, may be required to allow client communication across the trust relationship.

c

Windows Server 2025 LAN Manager authentication level must be configured to send NTLMv2 response only and to refuse LM and NTLM.

RMF Control: CM-6
Severity: H
CCI: CCI-000366
Version: WN25-SO-000310
Vuln IDs: V-278225
Rule IDs: SV-278225r1268251_rule

The Kerberos v5 authentication protocol is the default for authentication of users who are logging on to domain accounts. NTLM, which is less secure, is retained in later Windows versions for compatibility with clients and servers that are running earlier versions of Windows or applications that still use it. It is also used to authenticate logons to stand-alone or nondomain-joined computers that are running later versions.

Fix: F-82660r1181380_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: LAN Manager authentication level to "Send NTLMv2 response only. Refuse LM & NTLM".

b

Windows Server 2025 must be configured to at least negotiate signing for LDAP client signing.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000320
Vuln IDs: V-278226
Rule IDs: SV-278226r1268251_rule

This setting controls the signing requirements for LDAP clients. This must be set to "Negotiate signing" or "Require signing", depending on the environment and type of LDAP server in use.

Fix: F-82661r1181383_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: LDAP client signing requirements to "Negotiate signing" at a minimum.

b

Windows Server 2025 session security for NTLM SSP-based clients must be configured to require NTLMv2 session security and 128-bit encryption.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000330
Vuln IDs: V-278227
Rule IDs: SV-278227r1268251_rule

Microsoft has implemented a variety of security support providers for use with Remote Procedure Call (RPC) sessions. All of the options must be enabled to ensure the maximum security level.

Fix: F-82662r1181386_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Minimum session security for NTLM SSP based (including secure RPC) clients to "Require NTLMv2 session security" and "Require 128-bit encryption" (all options selected).

b

Windows Server 2025 session security for NTLM SSP-based servers must be configured to require NTLMv2 session security and 128-bit encryption.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SO-000340
Vuln IDs: V-278228
Rule IDs: SV-278228r1268251_rule

Microsoft has implemented a variety of security support providers for use with Remote Procedure Call (RPC) sessions. All of the options must be enabled to ensure the maximum security level.

Fix: F-82663r1181389_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Minimum session security for NTLM SSP based (including secure RPC) servers to "Require NTLMv2 session security" and "Require 128-bit encryption" (all options selected).

b

Windows Server 2025 users must be required to enter a password to access private keys stored on the computer.

RMF Control: IA-5
Severity: M
CCI: CCI-000186
Version: WN25-SO-000350
Vuln IDs: V-278229
Rule IDs: SV-278229r1181393_rule

If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the private key is stolen, this will lead to the compromise of the authentication and nonrepudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Both the holders of a digital certificate and the issuing authority must protect the computers, storage devices, or whatever they use to keep the private keys.

Fix: F-82664r1181392_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> System cryptography: Force strong key protection for user keys stored on the computer to "User must enter a password each time they use a key".

b

Windows Server 2025 must be configured to use FIPS-compliant algorithms for encryption, hashing, and signing.

RMF Control: SC-13
Severity: M
CCI: CCI-002450
Version: WN25-SO-000360
Vuln IDs: V-278230
Rule IDs: SV-278230r1181396_rule

This setting ensures the system uses FIPS-compliant algorithms for encryption, hashing, and signing. FIPS-compliant algorithms meet specific standards established by the U.S. Government and must be the algorithms used for all OS encryption functions.

Fix: F-82665r1181395_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing to "Enabled".

a

Windows Server 2025 default permissions of global system objects must be strengthened.

RMF Control: CM-6
Severity: L
CCI: CCI-000366
Version: WN25-SO-000370
Vuln IDs: V-278231
Rule IDs: SV-278231r1268251_rule

Windows systems maintain a global list of shared system resources such as DOS device names, mutexes, and semaphores. Each type of object is created with a default Discretionary Access Control List (DACL) that specifies who can access the objects with what permissions. When this policy is enabled, the default DACL is stronger, allowing nonadministrative users to read shared objects but not to modify shared objects they did not create.

Fix: F-82666r1181398_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> System objects: Strengthen default permissions of internal system objects (e.g., Symbolic Links) to "Enabled".

b

Windows Server 2025 User Account Control (UAC) approval mode for the built-in Administrator must be enabled.

RMF Control
Severity: M
CCI: CCI-004895
Version: WN25-SO-000380
Vuln IDs: V-278232
Rule IDs: SV-278232r1182191_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the built-in Administrator account so that it runs in Admin Approval Mode. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Fix: F-82667r1181401_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Admin Approval Mode for the Built-in Administrator account to "Enabled".

b

Windows Server 2025 UIAccess applications must not be allowed to prompt for elevation without using the secure desktop.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-SO-000390
Vuln IDs: V-278233
Rule IDs: SV-278233r1182193_rule

User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting prevents User Interface Accessibility programs from disabling the secure desktop for elevation prompts.

Fix: F-82668r1181404_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Allow UIAccess applications to prompt for elevation without using the secure desktop to "Disabled".

b

Windows Server 2025 User Account Control (UAC) must, at a minimum, prompt administrators for consent on the secure desktop.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-SO-000400
Vuln IDs: V-278234
Rule IDs: SV-278234r1182195_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the elevation requirements for logged-on administrators to complete a task that requires raised privileges.

Fix: F-82669r1181407_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode to "Prompt for consent on the secure desktop". The more secure option for this setting, "Prompt for credentials on the secure desktop", would also be acceptable.

b

Windows Server 2025 User Account Control (UAC) must automatically deny standard user requests for elevation.

RMF Control
Severity: M
CCI: CCI-004895
Version: WN25-SO-000410
Vuln IDs: V-278235
Rule IDs: SV-278235r1182197_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting controls the behavior of elevation when requested by a standard user account. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Fix: F-82670r1181410_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Behavior of the elevation prompt for standard users to "Automatically deny elevation requests".

b

Windows Server 2025 User Account Control (UAC) must be configured to detect application installations and prompt for elevation.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-SO-000420
Vuln IDs: V-278236
Rule IDs: SV-278236r1182199_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting requires Windows to respond to application installation requests by prompting for credentials.

Fix: F-82671r1181413_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Detect application installations and prompt for elevation to "Enabled".

b

Windows Server 2025 User Account Control (UAC) must only elevate UIAccess applications that are installed in secure locations.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-SO-000430
Vuln IDs: V-278237
Rule IDs: SV-278237r1182201_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures Windows to only allow applications installed in a secure location on the file system, such as the Program Files or the Windows\System32 folders, to run with elevated privileges.

Fix: F-82672r1181416_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Only elevate UIAccess applications that are installed in secure locations to "Enabled".

b

Windows Server 2025 User Account Control (UAC) must run all administrators in Admin Approval Mode, enabling UAC.

RMF Control
Severity: M
CCI: CCI-004895
Version: WN25-SO-000440
Vuln IDs: V-278238
Rule IDs: SV-278238r1182203_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting enables UAC. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Fix: F-82673r1181419_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Run all administrators in Admin Approval Mode to "Enabled".

b

Windows Server 2025 User Account Control (UAC) must virtualize file and registry write failures to per-user locations.

RMF Control: SC-3
Severity: M
CCI: CCI-001084
Version: WN25-SO-000450
Vuln IDs: V-278239
Rule IDs: SV-278239r1182205_rule

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures non-UAC-compliant applications to run in virtualized file and registry entries in per-user locations, allowing them to run.

Fix: F-82674r1181422_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Virtualize file and registry write failures to per-user locations to "Enabled".

b

Windows Server 2025 must preserve zone information when saving attachments.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-UC-000010
Vuln IDs: V-278240
Rule IDs: SV-278240r1268251_rule

Attachments from outside sources may contain malicious code. Preserving zone of origin (internet, intranet, local, restricted) information on file attachments allows Windows to determine risk.

Fix: F-82675r1266520_fix

The default behavior is for Windows to mark file attachments with their zone information. To correct this, for each user profile on the system configure the policy value for User Configuration >> Administrative Templates >> Windows Components >> Attachment Manager >> Do not preserve zone information in file attachments to "Not Configured" or "Disabled".

b

The Windows Server 2025 "Access Credential Manager as a trusted caller" user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000010
Vuln IDs: V-278241
Rule IDs: SV-278241r1182208_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Access Credential Manager as a trusted caller" user right may be able to retrieve the credentials of other accounts from Credential Manager.

Fix: F-82676r1181428_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Access Credential Manager as a trusted caller to be defined but containing no entries (blank).

c

The Windows Server 2025 "Act as part of the operating system" user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN25-UR-000020
Vuln IDs: V-278242
Rule IDs: SV-278242r1182209_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Act as part of the operating system" user right can assume the identity of any user and gain access to resources that the user is authorized to access. Any accounts with this right can take complete control of a system.

Fix: F-82677r1181431_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Act as part of the operating system to be defined but containing no entries (blank).

b

The Windows Server 2025 "Allow log on locally" user right must only be assigned to the Administrators group.

RMF Control: AC-3
Severity: M
CCI: CCI-000213
Version: WN25-UR-000030
Vuln IDs: V-278243
Rule IDs: SV-278243r1268226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Allow log on locally" user right can log on interactively to a system.

Fix: F-82678r1181867_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Allow log on locally to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Back up files and directories" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000040
Vuln IDs: V-278244
Rule IDs: SV-278244r1182211_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Back up files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data.

Fix: F-82679r1181870_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Back up files and directories to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Create a pagefile" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000050
Vuln IDs: V-278245
Rule IDs: SV-278245r1182212_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Create a pagefile" user right can change the size of a pagefile, which could affect system performance.

Fix: F-82680r1181873_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Create a pagefile to include only the following accounts or groups: - Administrators.

c

The Windows Server 2025 "Create a token object" user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN25-UR-000060
Vuln IDs: V-278246
Rule IDs: SV-278246r1182213_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Create a token object" user right allows a process to create an access token. This could be used to provide elevated rights and compromise a system.

Fix: F-82681r1181443_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Create a token object to be defined but containing no entries (blank).

b

The Windows Server 2025 "Create global objects" user right must only be assigned to Administrators, Service, Local Service, and Network Service.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000070
Vuln IDs: V-278247
Rule IDs: SV-278247r1182214_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Create global objects" user right can create objects that are available to all sessions, which could affect processes in other users' sessions.

Fix: F-82682r1181876_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Create global objects to include only the following accounts or groups: - Administrators. - Service. - Local Service. - Network Service.

b

The Windows Server 2025 "Create permanent shared objects" user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000080
Vuln IDs: V-278248
Rule IDs: SV-278248r1182215_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Create permanent shared objects" user right could expose sensitive data by creating shared objects.

Fix: F-82683r1181449_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Create permanent shared objects to be defined but containing no entries (blank).

b

The Windows Server 2025 "Create symbolic links" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000090
Vuln IDs: V-278249
Rule IDs: SV-278249r1182217_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Create symbolic links" user right can create pointers to other objects, which could expose the system to attack.

Fix: F-82684r1182216_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Create symbolic links to include only the following accounts or groups: - Administrators. Systems that have the Hyper-V role will also have "Virtual Machines" given this user right. To add this manually, enter it as "NT Virtual Machine\Virtual Machines".

c

The Windows Server 2025 "Debug programs" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: H
CCI: CCI-002235
Version: WN25-UR-000100
Vuln IDs: V-278250
Rule IDs: SV-278250r1182218_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Debug programs" user right can attach a debugger to any process or to the kernel, providing complete access to sensitive and critical operating system components. This right is given to Administrators in the default configuration.

Fix: F-82685r1181883_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Debug programs to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Force shutdown from a remote system" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000110
Vuln IDs: V-278251
Rule IDs: SV-278251r1182219_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Force shutdown from a remote system" user right can remotely shut down a system, which could result in a denial of service.

Fix: F-82686r1181886_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Force shutdown from a remote system to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Generate security audits" user right must only be assigned to Local Service and Network Service.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000120
Vuln IDs: V-278252
Rule IDs: SV-278252r1182220_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Generate security audits" user right specifies users and processes that can generate Security Log audit records, which must only be the system service accounts defined.

Fix: F-82687r1181889_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Generate security audits to include only the following accounts or groups: - Local Service. - Network Service.

b

The Windows Server 2025 "Impersonate a client after authentication" user right must only be assigned to Administrators, Service, Local Service, and Network Service.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000130
Vuln IDs: V-278253
Rule IDs: SV-278253r1182221_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Impersonate a client after authentication" user right allows a program to impersonate another user or account to run on their behalf. An attacker could use this to elevate privileges.

Fix: F-82688r1181892_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Impersonate a client after authentication to include only the following accounts or groups: - Administrators. - Service. - Local Service. - Network Service.

b

The Windows Server 2025 "Increase scheduling priority" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000140
Vuln IDs: V-278254
Rule IDs: SV-278254r1182222_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Increase scheduling priority" user right can change a scheduling priority, causing performance issues or a denial of service.

Fix: F-82689r1181895_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Increase scheduling priority to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Load and unload device drivers" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000150
Vuln IDs: V-278255
Rule IDs: SV-278255r1182223_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Load and unload device drivers" user right allows a user to load device drivers dynamically on a system. This could be used by an attacker to install malicious code.

Fix: F-82690r1181898_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Load and unload device drivers to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Lock pages in memory" user right must not be assigned to any groups or accounts.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000160
Vuln IDs: V-278256
Rule IDs: SV-278256r1182224_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. The "Lock pages in memory" user right allows physical memory to be assigned to processes, which could cause performance issues or a denial of service. Satisfies: SRG-OS-000324-GPOS-00125, SRG-OS-000433-GPOS-00193

Fix: F-82691r1181473_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Lock pages in memory to be defined but containing no entries (blank).

b

The Windows Server 2025 "Manage auditing and security log" user right must only be assigned to the Administrators group.

RMF Control: AU-9
Severity: M
CCI: CCI-000162
Version: WN25-UR-000170
Vuln IDs: V-278257
Rule IDs: SV-278257r1182225_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Manage auditing and security log" user right can manage the security log and change auditing configurations. This could be used to clear evidence of tampering. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000063-GPOS-00032, SRG-OS-000337-GPOS-00129

Fix: F-82692r1181902_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Manage auditing and security log to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Modify firmware environment values" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000180
Vuln IDs: V-278258
Rule IDs: SV-278258r1182226_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a denial of service.

Fix: F-82693r1181905_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Modify firmware environment values to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Perform volume maintenance tasks" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000190
Vuln IDs: V-278259
Rule IDs: SV-278259r1182227_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Perform volume maintenance tasks" user right can manage volume and disk configurations. This could be used to delete volumes, resulting in data loss or a denial of service.

Fix: F-82694r1181908_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Perform volume maintenance tasks to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Profile single process" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000200
Vuln IDs: V-278260
Rule IDs: SV-278260r1182228_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Profile single process" user right can monitor nonsystem processes performance. An attacker could use this to identify processes to attack.

Fix: F-82695r1181911_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Profile single process to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Restore files and directories" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000210
Vuln IDs: V-278261
Rule IDs: SV-278261r1182229_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Restore files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data. It could also be used to overwrite more current data.

Fix: F-82696r1181914_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Restore files and directories to include only the following accounts or groups: - Administrators.

b

The Windows Server 2025 "Take ownership of files or other objects" user right must only be assigned to the Administrators group.

RMF Control: AC-6
Severity: M
CCI: CCI-002235
Version: WN25-UR-000220
Vuln IDs: V-278262
Rule IDs: SV-278262r1182230_rule

Inappropriately granting user rights provides system, administrative, and other high-level capabilities. Accounts with the "Take ownership of files or other objects" user right can take ownership of objects and make changes.

Fix: F-82697r1181917_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> Take ownership of files or other objects to include only the following accounts or groups: - Administrators.

b

Windows Server 2025 must be configured to audit handle manipulation failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000583
Vuln IDs: V-279918
Rule IDs: SV-279918r1268225_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, analyze compromises that have occurred, and detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Fix: F-84383r1181959_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Handle Manipulation" with "Failure" selected.

b

Windows Server 2025 must be configured to audit registry failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000585
Vuln IDs: V-279920
Rule IDs: SV-279920r1268225_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, analyze compromises that have occurred, and detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Fix: F-84385r1181965_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Registry" with "Failure" selected.

b

Windows Server 2025 must be configured to audit registry successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000586
Vuln IDs: V-279921
Rule IDs: SV-279921r1268225_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, analyze compromises that have occurred, and detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Fix: F-84386r1181968_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Object Access >> "Audit Registry" with "Success" selected.

b

Windows Server 2025 must be configured to audit sensitive privilege use successes.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000587
Vuln IDs: V-279922
Rule IDs: SV-279922r1268225_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, analyze compromises that have occurred, and detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Fix: F-84387r1181971_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Privilege Use >> Audit Sensitive Privilege Use with "Success" selected.

b

Windows Server 2025 must be configured to audit sensitive privilege use failures.

RMF Control: AU-12
Severity: M
CCI: CCI-000172
Version: WN25-AU-000588
Vuln IDs: V-279923
Rule IDs: SV-279923r1268225_rule

Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, analyze compromises that have occurred, and detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. Credential validation records events related to validation tests on credentials for a user account logon.

Fix: F-84388r1181974_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Advanced Audit Policy Configuration >> System Audit Policies >> Privilege Use >> Audit Sensitive Privilege Use with "Failure" selected.

b

Windows Server 2025 networked systems must have and implement OpenSSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.

RMF Control: SC-8
Severity: M
CCI: CCI-002418
Version: WN25-SH-000010
Vuln IDs: V-285313
Rule IDs: SV-285313r1211167_rule

Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, logical means (cryptography) do not have to be employed, and vice versa. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00191

Fix: F-89788r1211166_fix

To install and start the OpenSSH service, run the following commands: C:\ > Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0 C:\ > Start-Service sshd C:\ > Set-Service -Name sshd -StartupType 'Automatic'

b

Windows Server 2025 OpenSSH must display the Standard Mandatory DoW Notice and Consent Banner before granting remote access to the system via an OpenSSH logon.

RMF Control: AC-8
Severity: M
CCI: CCI-000048
Version: WN25-SH-000020
Vuln IDs: V-285314
Rule IDs: SV-285314r1268215_rule

The warning message reinforces policy awareness during the logon process and facilitates possible legal action against attackers. Alternatively, systems whose ownership should not be obvious must ensure usage of a banner that does not provide easy attribution. Satisfies: SRG-OS-000023-GPOS-00006, SRG-OS-000228-GPOS-00089

Fix: F-89789r1211169_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file. An example configuration line is: Banner C:\ProgramData\ssh\Banner.txt Restart the OpenSSH service for the settings to take effect.

b

Windows Server 2025 OpenSSH must accept public key authentication.

RMF Control: IA-2
Severity: M
CCI: CCI-000765
Version: WN25-SH-000030
Vuln IDs: V-285315
Rule IDs: SV-285315r1268228_rule

Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor authentication requires using two or more factors to achieve authentication. A privileged account is defined as an information system account with authorizations of a privileged user. A DoW common access card (CAC) with DoW-approved PKI is an example of multifactor authentication. Satisfies: SRG-OS-000105-GPOS-00052, SRG-OS-000106-GPOS-00053, SRG-OS-000107-GPOS-00054, SRG-OS-000108-GPOS-00056

Fix: F-89790r1211172_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file: PubkeyAuthentication yes Restart the OpenSSH service for the settings to take effect.

c

Windows Server 2025 OpenSSH must not allow blank passwords.

RMF Control: IA-2
Severity: H
CCI: CCI-000766
Version: WN25-SH-000040
Vuln IDs: V-285316
Rule IDs: SV-285316r1268229_rule

If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords must never be used in operational environments. Satisfies: SRG-OS-000106-GPOS-00053, SRG-OS-000480-GPOS-00229, SRG-OS-000480-GPOS-00228

Fix: F-89791r1211175_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file: PermitEmptyPasswords no Restart the OpenSSH service for the settings to take effect.

b

Windows Server 2025 OpenSSH must force a frequent session key renegotiation for SSH connections to the server.

RMF Control: AC-17
Severity: M
CCI: CCI-000068
Version: WN25-SH-000050
Vuln IDs: V-285317
Rule IDs: SV-285317r1211179_rule

Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa. Session key regeneration limits the chances of a session key becoming compromised. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000033-GPOS-00014, SRG-OS-000424-GPOS-00189

Fix: F-89792r1211178_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file. An example configuration line is: RekeyLimit 1G 1h Restart the OpenSSH service for the settings to take effect.

b

Windows Server 2025 OpenSSH must be configured so that all network connections associated with SSH traffic terminate after becoming unresponsive.

RMF Control: SC-10
Severity: M
CCI: CCI-001133
Version: WN25-SH-000060
Vuln IDs: V-285318
Rule IDs: SV-285318r1211182_rule

Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. Quickly terminating an idle SSH session will also free up resources committed by the managed network element. Terminating network connections associated with communications sessions includes, for example, deallocating associated TCP/IP address/port pairs at the operating system level and deallocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean the operating system terminates all sessions or network access; it only ends the unresponsive session and releases the resources associated with that session. Windows Server 2025 uses $env:ProgramData/ssh/sshd_config for configurations of OpenSSH. Within the sshd_config, the product of the values of "ClientAliveInterval" and "ClientAliveCountMax" are used to establish the inactivity threshold. The "ClientAliveInterval" is a timeout interval in seconds, after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client. The "ClientAliveCountMax" is the number of client alive messages that may be sent without sshd receiving any messages back from the client. If this threshold is met, sshd will disconnect the client. For more information on these settings and others, refer to the sshd_config man pages. Satisfies: SRG-OS-000163-GPOS-00072, SRG-OS-000279-GPOS-00110

Fix: F-89793r1211181_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file: ClientAliveCountMax 1 Restart the OpenSSH service for the settings to take effect.

b

Windows Server 2025 OpenSSH must be configured so that all network connections associated with SSH traffic are terminated after 10 minutes of becoming unresponsive.

RMF Control: SC-10
Severity: M
CCI: CCI-001133
Version: WN25-SH-000070
Vuln IDs: V-285319
Rule IDs: SV-285319r1212174_rule

Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. Quickly terminating an idle SSH session will also free up resources committed by the managed network element. Terminating network connections associated with communications sessions includes, for example, deallocating associated TCP/IP address/port pairs at the operating system level and deallocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean the operating system terminates all sessions or network access; it only ends the unresponsive session and releases the resources associated with that session. Windows Server 2025 uses $env:ProgramData/ssh/sshd_config for configurations of OpenSSH. Within the sshd_config, the product of the values of "ClientAliveInterval" and "ClientAliveCountMax" are used to establish the inactivity threshold. The "ClientAliveInterval" is a timeout interval in seconds, after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client. The "ClientAliveCountMax" is the number of client alive messages that may be sent without sshd receiving any messages back from the client. If this threshold is met, sshd will disconnect the client. For more information on these settings and others, refer to the sshd_config man pages. Satisfies: SRG-OS-000126-GPOS-00066, SRG-OS-000163-GPOS-00072, SRG-OS-000279-GPOS-00109, SRG-OS-000395-GPOS-00176

Fix: F-89794r1211184_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file. ClientAliveInterval 600 Restart the OpenSSH service for the settings to take effect.

b

The Windows Server 2025 OpenSSH configuration file must conform to minimum requirements.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SH-000080
Vuln IDs: V-285320
Rule IDs: SV-285320r1268251_rule

Service configuration files enable or disable features of their respective services, which if configured incorrectly can lead to insecure and vulnerable configurations. Therefore, service configuration files must be owned by the correct group to prevent unauthorized changes.

Fix: F-89795r1256735_fix

Maintain the permissions of the "$env:ProgramData/ssh/sshd_config" file as follows: NT AUTHORITY\SYSTEM:(F) BUILTIN\Administrators:(F) NT AUTHORITY\Authenticated Users:(RX)

b

Windows Server 2025 OpenSSH private host key files must conform to minimum requirements.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SH-000090
Vuln IDs: V-285321
Rule IDs: SV-285321r1268251_rule

If an unauthorized user obtains the private SSH host key file, the host could be impersonated.

Fix: F-89796r1211190_fix

Maintain the permissions of the private host key files as follows: BUILTIN\Administrators:(F) NT AUTHORITY\SYSTEM:(F)

b

Windows Server 2025 OpenSSH public host key files must conform to minimum requirements.

RMF Control: CM-6
Severity: M
CCI: CCI-000366
Version: WN25-SH-000100
Vuln IDs: V-285322
Rule IDs: SV-285322r1268251_rule

If a public host key file is modified by an unauthorized user, the SSH service may be compromised.

Fix: F-89797r1211193_fix

Maintain the permissions of the public host key files as follows: BUILTIN\Administrators:(F) NT AUTHORITY\SYSTEM:(F)

b

Windows Server 2025 OpenSSH must not allow GSSAPI authentication.

RMF Control: CM-5
Severity: M
CCI: CCI-001813
Version: WN25-SH-000110
Vuln IDs: V-285323
Rule IDs: SV-285323r1211197_rule

Generic Security Service Application Program Interface (GSSAPI) authentication is used to provide additional authentication mechanisms to applications. Allowing GSSAPI authentication through SSH exposes the system's GSSAPI to remote hosts, increasing the attack surface of the system. Satisfies: SRG-OS-000364-GPOS-00151, SRG-OS-000480-GPOS-00228

Fix: F-89798r1211196_fix

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file: GSSAPIAuthentication no Restart the OpenSSH service for the settings to take effect.