CVE-2024-43631: Microsoft Windows 10 21h2

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Windows Secure Kernel Mode Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 21h2: before 10.0.19044.5131 (fixed in 10.0.19044.5131)
• Microsoft Windows 10 22h2: before 10.0.19045.5131 (fixed in 10.0.19045.5131)
• Microsoft Windows 11 22h2: before 10.0.22621.4460 (fixed in 10.0.22621.4460)
• Microsoft Windows 11 23h2: before 10.0.22631.4460 (fixed in 10.0.22631.4460)
• Microsoft Windows 11 24h2: before 10.0.26100.2314 (fixed in 10.0.26100.2314)
• Microsoft Windows Server 2022: before 10.0.20348.2849 (fixed in 10.0.20348.2849)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.1251 (fixed in 10.0.25398.1251)
• Microsoft Windows Server 2025: before 10.0.26100.2314 (fixed in 10.0.26100.2314)

Published 2024-11-12. Last modified 2026-06-17.