Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since March 4, 2024.
CVE-2024-21338
Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
Added to KEV March 4, 2024
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2024-21338
- CWE
- CWE-822
- Affected products
- Windows · Microsoft Windows · Microsoft
What happened
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.
What it means for your business
Microsoft Windows is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2024-21338). 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. CISA remediation due date: 2024-03-25. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: March 25, 2024
Sources
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