CVE-2021-40461: Microsoft Windows 10

High severity, CVSS 8.0. EPSS: 1.4% chance of exploitation in the next 30 days.

Windows Hyper-V Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10: version 20h2 only; version 21h1 only; version 1809 only; version 1909 only; version 2004 only
• Microsoft Windows 11: affected versions not specified
• Microsoft Windows Server: version 20h2 only
• Microsoft Windows Server 2016: version 2004 only
• Microsoft Windows Server 2019: affected versions not specified
• Microsoft Windows Server 2022: any version

Published 2021-10-13. Last modified 2026-06-17.