CVE-2022-24521: Microsoft Windows CLFS Driver Privilege Escalation Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-04-13. EPSS: 7.1% chance of exploitation in the next 30 days.

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 1507: before 10.0.10240.19265 (fixed in 10.0.10240.19265)
• Microsoft Windows 10 1607: before 10.0.14393.5066 (fixed in 10.0.14393.5066)
• Microsoft Windows 10 1809: up to and including 10.0.17763.2803
• Microsoft Windows 10 1909: before 10.0.18363.2212 (fixed in 10.0.18363.2212)
• Microsoft Windows 10 20h2: before 10.0.19042.1645 (fixed in 10.0.19042.1645)
• Microsoft Windows 10 21h1: before 10.0.19043.1645 (fixed in 10.0.19043.1645)
• Microsoft Windows 10 21h2: before 10.0.19044.1645 (fixed in 10.0.19044.1645)
• Microsoft Windows 11 21h2: before 10.0.22000.613 (fixed in 10.0.22000.613)
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 2008: any version; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.5066 (fixed in 10.0.14393.5066)
• Microsoft Windows Server 2019: before 10.0.17763.2803 (fixed in 10.0.17763.2803)
• Microsoft Windows Server 2022: before 10.0.20348.643 (fixed in 10.0.20348.643)
• Microsoft Windows Server 20h2: before 10.0.19042.1645 (fixed in 10.0.19042.1645)

Published 2022-04-15. Last modified 2026-06-17.