CVE-2026-44805: Microsoft Windows Server 2019

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.

Affected products

• Microsoft Windows Server 2019: before 10.0.17763.8880 (fixed in 10.0.17763.8880)
• Microsoft Windows Server 2022: before 10.0.20348.5256 (fixed in 10.0.20348.5256)
• Microsoft Windows Server 2025: before 10.0.26100.32995 (fixed in 10.0.26100.32995)

Published 2026-06-09. Last modified 2026-07-23.