CVE-2025-27475: Microsoft Windows 11 22h2

High severity, CVSS 7.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Sensitive data storage in improperly locked memory in Windows Update Stack allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 11 22h2: before 10.0.22621.5189 (fixed in 10.0.22621.5189)
• Microsoft Windows 11 23h2: before 10.0.22631.5189 (fixed in 10.0.22631.5189)
• Microsoft Windows 11 24h2: before 10.0.26100.3775 (fixed in 10.0.26100.3775)

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