Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What configurations or versions could be at risk from this vulnerability?
This bypass could affect any Hyper-V configurations that are using Router Guard.
Certain packets that would normally be blocked or dropped could be processed. This could allow an attacker to bypass set policy, potentially influencing router paths.
Security updates
10.0.17763.2452 — https://support.microsoft.com/help/5009557
10.0.18363.2037 — https://support.microsoft.com/help/5009545
10.0.19043.1466 — https://support.microsoft.com/help/5009543
10.0.20348.469 — https://support.microsoft.com/help/5009555
10.0.22000.434 — https://support.microsoft.com/help/5009566
10.0.10240.19177 — https://support.microsoft.com/help/5009585
10.0.14393.4886 — https://support.microsoft.com/help/5009546
6.1.7601.25829 — https://support.microsoft.com/help/5009610
6.1.7601.25829 — https://support.microsoft.com/help/5009621
6.3.9600.20246 — https://support.microsoft.com/help/5009624
6.3.9600.20246 — https://support.microsoft.com/help/5009595
6.2.9200.23584 — https://support.microsoft.com/help/5009586
6.2.9200.23584 — https://support.microsoft.com/help/5009619
Vulnerabilities 1
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Medium 4.6
Windows Hyper-V Security Feature Bypass Vulnerability
Windows Hyper-V Security Feature Bypass Vulnerability
Revision history
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#1
Information published.
References
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CVE-2022-21905 Windows Hyper-V Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21905
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss