CVE-2026-69858: Microsoft Windows Server 2022

High severity, CVSS 8.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.

Affected products

• 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 2026-09-16.