CVE-2025-27728: Microsoft Windows 11 24h2

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Out-of-bounds read in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 11 24h2: before 10.0.26100.3775 (fixed in 10.0.26100.3775)
• Microsoft Windows Server 2025: before 10.0.26100.3775 (fixed in 10.0.26100.3775)

Published 2025-04-08. Last modified 2026-06-17.