CVE-2021-33755: Microsoft Windows 10

Medium severity, CVSS 6.3. EPSS: 3.1% chance of exploitation in the next 30 days.

Windows Hyper-V Denial of Service Vulnerability

Affected products

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

Published 2021-07-14. Last modified 2026-08-10.