CVE-2024-21309: Microsoft Windows 11 21h2

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11 21h2: before 10.0.22000.2713 (fixed in 10.0.22000.2713)
• Microsoft Windows 11 22h2: before 10.0.22621.3007 (fixed in 10.0.22621.3007)
• Microsoft Windows 11 23h2: before 10.0.22631.3007 (fixed in 10.0.22631.3007)
• Microsoft Windows Server 2022: before 10.0.20348.2227 (fixed in 10.0.20348.2227)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.643 (fixed in 10.0.25398.643)

Published 2024-01-09. Last modified 2026-06-17.