CVE-2025-55697: Microsoft Windows Server 2022 23h2

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Azure Local allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows Server 2022 23h2: before 10.0.25398.1913 (fixed in 10.0.25398.1913)
• Microsoft Windows Server 2025: before 10.0.26100.6899 (fixed in 10.0.26100.6899)

Published 2025-10-14. Last modified 2026-06-17.