CVE-2026-45600: Microsoft Windows 11 24h2

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

Access of resource using incompatible type ('type confusion') in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 11 24h2: before 10.0.26100.8655 (fixed in 10.0.26100.8655)
• Microsoft Windows 11 25h2: before 10.0.26200.8655 (fixed in 10.0.26200.8655)
• Microsoft Windows 11 26h1: before 10.0.28000.2269 (fixed in 10.0.28000.2269)
• Microsoft Windows Server 2025: before 10.0.26100.32995 (fixed in 10.0.26100.32995)

Published 2026-06-09. Last modified 2026-07-23.