CVE-2026-41096: Microsoft Windows 11 23h2

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Windows 11 23h2: before 10.0.22631.7079 (fixed in 10.0.22631.7079)
• Microsoft Windows 11 24h2: before 10.0.26100.8390 (fixed in 10.0.26100.8390)
• Microsoft Windows 11 25h2: before 10.0.26200.8390 (fixed in 10.0.26200.8390)
• Microsoft Windows 11 26h1: before 10.0.28000.2113 (fixed in 10.0.28000.2113)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.2330 (fixed in 10.0.25398.2330)
• Microsoft Windows Server 2025: before 10.0.26100.32772 (fixed in 10.0.26100.32772)

Published 2026-05-12. Last modified 2026-06-17.