April 13, 2022 · Applied Cybernetics Group
CVE-2022-24521 — Microsoft Windows
known ransomware use
Microsoft Windows CLFS Driver Privilege Escalation Vulnerability
- Added to KEV
2022-04-13- Federal due date
2022-05-04- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 93.7th percentile (score 0.073, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- ATT&CK
- T1059 , T1068 , T1078 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2022-24521
CISA short description
Microsoft Windows Common Log File System (CLFS) Driver contains an unspecified vulnerability that allows for privilege escalation.
Required action
Apply updates per vendor instructions.