CVE-2024-43639: Microsoft Windows Server 2012

Critical severity, CVSS 9.8. EPSS: 8.9% chance of exploitation in the next 30 days.

Windows KDC Proxy Remote Code Execution Vulnerability

Affected products

• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.7515 (fixed in 10.0.14393.7515)
• Microsoft Windows Server 2019: before 10.0.17763.6532 (fixed in 10.0.17763.6532)
• 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.