CVE-2025-62458: Microsoft Windows 10 1607

High severity, CVSS 7.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 10 1607: before 10.0.14393.8688 (fixed in 10.0.14393.8688)
• Microsoft Windows 10 1809: before 10.0.17763.8146 (fixed in 10.0.17763.8146)
• Microsoft Windows 10 21h2: before 10.0.19044.6691 (fixed in 10.0.19044.6691)
• Microsoft Windows 10 22h2: before 10.0.19045.6691 (fixed in 10.0.19045.6691)
• Microsoft Windows 11 23h2: before 10.0.22631.6345 (fixed in 10.0.22631.6345)
• Microsoft Windows Server 2008: version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.8688 (fixed in 10.0.14393.8688)
• Microsoft Windows Server 2019: before 10.0.17763.8146 (fixed in 10.0.17763.8146)
• Microsoft Windows Server 2022: before 10.0.20348.4467 (fixed in 10.0.20348.4467)

Published 2025-12-09. Last modified 2026-10-07.