CVE-2022-21882: Microsoft Win32k Privilege Escalation Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-02-04. EPSS: 59.2% chance of exploitation in the next 30 days.

Win32k Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 1809: before 10.0.17763.2452 (fixed in 10.0.17763.2452)
• Microsoft Windows 10 1909: before 10.0.18363.2037 (fixed in 10.0.18363.2037)
• Microsoft Windows 10 20h2: before 10.0.19042.1466 (fixed in 10.0.19042.1466)
• Microsoft Windows 10 21h1: before 10.0.19043.1466 (fixed in 10.0.19043.1466)
• Microsoft Windows 10 21h2: before 10.0.19044.1466 (fixed in 10.0.19044.1466)
• Microsoft Windows 11 21h2: before 10.0.22000.434 (fixed in 10.0.22000.434)
• Microsoft Windows Server 2019: before 10.0.17763.2452 (fixed in 10.0.17763.2452)
• Microsoft Windows Server 2022: before 10.0.20348.469 (fixed in 10.0.20348.469)
• Microsoft Windows Server 20h2: before 10.0.19042.1466 (fixed in 10.0.19042.1466)

Published 2022-01-11. Last modified 2026-08-15.