CVE-2026-69405: Microsoft Windows 10 1607

Medium severity, CVSS 5.7. EPSS: 0.6% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft Windows 10 1607: before 10.0.14393.9512 (fixed in 10.0.14393.9512)
• Microsoft Windows 10 1809: before 10.0.17763.9245 (fixed in 10.0.17763.9245)
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.9512 (fixed in 10.0.14393.9512)
• Microsoft Windows Server 2019: before 10.0.17763.9245 (fixed in 10.0.17763.9245)
• Microsoft Windows Server 2022: before 10.0.20348.5622 (fixed in 10.0.20348.5622)
• Microsoft Windows Server 2025: before 10.0.26100.33438 (fixed in 10.0.26100.33438)

Published 2026-09-08. Last modified 2026-09-24.