CVE-2026-26178: Microsoft Windows 10 1607

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 10 1607: before 10.0.14393.9060 (fixed in 10.0.14393.9060)
• Microsoft Windows 10 1809: before 10.0.17763.8644 (fixed in 10.0.17763.8644)
• Microsoft Windows 10 21h2: before 10.0.19044.7184 (fixed in 10.0.19044.7184)
• Microsoft Windows 10 22h2: before 10.0.19045.7184 (fixed in 10.0.19045.7184)
• Microsoft Windows 11 23h2: before 10.0.22631.6936 (fixed in 10.0.22631.6936)
• Microsoft Windows 11 24h2: before 10.0.26100.8246 (fixed in 10.0.26100.8246)
• Microsoft Windows 11 25h2: before 10.0.26200.8246 (fixed in 10.0.26200.8246)
• Microsoft Windows Server 2016: before 10.0.14393.9060 (fixed in 10.0.14393.9060)
• Microsoft Windows Server 2019: before 10.0.17763.8644 (fixed in 10.0.17763.8644)
• Microsoft Windows Server 2022: before 10.0.20348.5020 (fixed in 10.0.20348.5020)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.2274 (fixed in 10.0.25398.2274)
• Microsoft Windows Server 2025: before 10.0.26100.32690 (fixed in 10.0.26100.32690)

Published 2026-04-14. Last modified 2026-06-17.