CVE-2026-69781: Microsoft Windows 11 24h2

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Missing release of memory after effective lifetime in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.

Affected products

• Microsoft Windows 11 24h2: before 10.0.26100.9445 (fixed in 10.0.26100.9445)
• Microsoft Windows 11 25h2: before 10.0.26200.9445 (fixed in 10.0.26200.9445)
• Microsoft Windows 11 26h1: before 10.0.28000.2954 (fixed in 10.0.28000.2954)
• Microsoft Windows Server 2025: before 10.0.26100.33438 (fixed in 10.0.26100.33438)

Published 2026-09-08. Last modified 2026-09-10.