critical
CISA KEV
Ransomware
CVE-2024-21338
Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
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.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal remediation due Mar 25, 2024 — past due
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