CISA description
Microsoft Windows Kernel contains an exposed IOCTL with insufficient access control vulnerability within the IOCTL (input and output control) dispatcher in appid.sys that allows a local attacker to achieve privilege escalation.
CVE-2024-21338 Ransomware
Microsoft · Windows
Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes & references
Where this lands in 800-53
Vulnerability data triggers these controls during assessment and continuous monitoring.