CVE-2023-35631: Microsoft Windows 11 21h2

High severity, CVSS 7.8. EPSS: 6.5% chance of exploitation in the next 30 days.

Win32k Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11 21h2: before 10.0.22000.2652 (fixed in 10.0.22000.2652)
• Microsoft Windows 11 22h2: before 10.0.22621.2861 (fixed in 10.0.22621.2861)
• Microsoft Windows 11 23h2: before 10.0.22631.2861 (fixed in 10.0.22631.2861)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.584 (fixed in 10.0.25398.584)

Published 2023-12-12. Last modified 2026-06-17.