CVE-2024-21338

Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability

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. Vendor/Product: Microsoft Windows. Added to CISA KEV 2024-03-04; required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Category: Vulnerability, Known Exploited