CVE-2024-21338 — Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
CVE-2024-21338: Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Windows |
| Date added | 2024-03-04 |
| Due date | 2024-03-25 |
| Ransomware campaign use | Known |
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 (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21338
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog