CVE-2022-21975: Windows Hyper-V Denial of Service Vulnerability

Severity: low (CVSS 1.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-03-09 · updated 2026-06-17
Weakness: CWE-362

Description

Windows Hyper-V Denial of Service Vulnerability

Affected products

Microsoft Windows 10 Version 1607: 20h2, 21h1, 21h2, 1607, 1809, 1909
Microsoft Windows 8.1: all versions
Microsoft Windows Server: 20h2, 2022
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: all versions
Microsoft Windows Server 2019: all versions
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.19235 — fixed in 10.0.10240.19235
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.5006 — fixed in 10.0.14393.5006
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.2686 — fixed in 10.0.17763.2686
Microsoft Windows 10 1909: from 10.0.0 before 10.0.18363.2158 — fixed in 10.0.18363.2158
Microsoft Windows 10 21H1: from 10.0.0 before 10.0.19043.1586 — fixed in 10.0.19043.1586
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.1586 — fixed in 10.0.19044.1586
Microsoft Windows 8.1: from 6.3.0 before 6.3.9600.20303 — fixed in 6.3.9600.20303
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.20303 — fixed in 6.3.9600.20303
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.5006 — fixed in 10.0.14393.5006
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.2686 — fixed in 10.0.17763.2686
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.587 — fixed in 10.0.20348.587
Microsoft Windows Server version 20H2: from 10.0.0 before 10.0.19042.1586 — fixed in 10.0.19042.1586

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.19235; Microsoft Windows 10 1607 10.0.14393.5006; Microsoft Windows 10 10.0.17763.2686; Microsoft Windows 10 1909 10.0.18363.2158; Microsoft Windows 10 21H1 10.0.19043.1586; Microsoft Windows 10 10.0.19044.1586; Microsoft Windows 8.1 6.3.9600.20303; Microsoft Windows Server 2012 R2 6.3.9600.20303; Microsoft Windows Server 2016 10.0.14393.5006; Microsoft Windows Server 2019 10.0.17763.2686; Microsoft Windows Server 2022 10.0.20348.587; Microsoft Windows Server version 20H2 10.0.19042.1586. Check the vendor advisory for mitigations.

References

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