Summary
Impact: Elevation of Privilege. Microsoft rating: Critical. Not known to be exploited — Exploitation Unlikely. Customer action: Required.
Details
How could an attacker exploit this vulnerability?
An attacker with administrative access to an affected Hyper-V host could exploit this vulnerability by supplying specially crafted virtual TPM state data to a virtual machine. Successful exploitation could allow the attacker to cross a security boundary and gain elevated privileges.
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain Virtual Trust Level 1 (VTL1) privileges.
Security updates
10.0.17763.9245 — https://support.microsoft.com/help/5122876
10.0.20348.5622 — https://support.microsoft.com/help/5122882
10.0.19044.7725 — https://support.microsoft.com/help/5122878
10.0.26100.33438 — https://support.microsoft.com/help/5122871
10.0.26200.9445 — https://support.microsoft.com/help/5124008
10.0.22631.7582 — https://support.microsoft.com/help/5122880
10.0.28000.2954 — https://support.microsoft.com/help/5124012
10.0.14393.9512 — https://support.microsoft.com/help/5123099
Vulnerabilities 1
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High 8.2
Windows Hyper-V Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Revision history
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#1
Information published.
References
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CVE-2026-72961 Windows Hyper-V Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72961
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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