CVE-2026-25172: Microsoft Windows Server 2012

High severity, CVSS 8.0. EPSS: 0.9% chance of exploitation in the next 30 days.

Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.

Affected products

• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.8957 (fixed in 10.0.14393.8957)
• Microsoft Windows Server 2019: before 10.0.17763.8511 (fixed in 10.0.17763.8511)
• Microsoft Windows Server 2022: before 10.0.20348.4830 (fixed in 10.0.20348.4830)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.2207 (fixed in 10.0.25398.2207)
• Microsoft Windows Server 2025: before 10.0.26100.32463 (fixed in 10.0.26100.32463)

Published 2026-03-10. Last modified 2026-06-17.