CVE-2026-25189: Microsoft Windows 10 1809

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 10 1809: before 10.0.17763.8511 (fixed in 10.0.17763.8511)
• Microsoft Windows 10 21h2: before 10.0.19044.7058 (fixed in 10.0.19044.7058)
• Microsoft Windows 10 22h2: before 10.0.19045.7058 (fixed in 10.0.19045.7058)
• 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)

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