CVE-2023-36406: Microsoft Windows 11 21h2

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Windows Hyper-V Information Disclosure Vulnerability

Affected products

• Microsoft Windows 11 21h2: before 10.0.22000.2600 (fixed in 10.0.22000.2600)
• Microsoft Windows 11 22h2: before 10.0.22621.2715 (fixed in 10.0.22621.2715)
• Microsoft Windows 11 23h2: before 10.0.22631.2715 (fixed in 10.0.22631.2715)
• Microsoft Windows Server 2022: affected versions not specified
• Microsoft Windows Server 2022 23h2: before 10.0.25398.531 (fixed in 10.0.25398.531)

Published 2023-11-14. Last modified 2026-06-17.