CVE-2024-21346: Microsoft Windows 11 21h2

High severity, CVSS 7.8. EPSS: 4.1% chance of exploitation in the next 30 days.

Win32k Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11 21h2: before 10.0.22000.2777 (fixed in 10.0.22000.2777)
• Microsoft Windows 11 22h2: before 10.0.22621.3155 (fixed in 10.0.22621.3155)
• Microsoft Windows 11 23h2: before 10.0.22631.3155 (fixed in 10.0.22631.3155)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.709 (fixed in 10.0.25398.709)

Published 2024-02-13. Last modified 2026-08-10.