CISA Known Exploited Vulnerability

CVE-2021-31956

Microsoft · Windows

Microsoft Windows NTFS Privilege Escalation Vulnerability

Date added 2021-11-03

BOD 22-01 due date 2021-11-17

CWE CWE-191, CWE-787

Ransomware Unknown

CISA description

Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.

Required action

Apply updates per vendor instructions.

Notes & references

https://nvd.nist.gov/vuln/detail/CVE-2021-31956

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

RA-5 · Vulnerability Monitoring and Scanning
SI-2 · Flaw Remediation
CM-6 · Configuration Settings
SI-7 · Software, Firmware, and Information Integrity
CM-8 · System Component Inventory

External lookups

NVD · CVE-2021-31956
CVE.org · CVE-2021-31956
CISA KEV catalog (canonical)