CVE-2020-0661: Microsoft Windows 10

Medium severity, CVSS 6.8. EPSS: 1.6% chance of exploitation in the next 30 days.

A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0751.

Affected products

• Microsoft Windows 10: version 1607 only; version 1809 only; version 1909 only
• Microsoft Windows Server 2016: affected versions not specified; version 1903 only; version 1909 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2020-02-11. Last modified 2026-06-17.