Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
How could an attacker exploit this vulnerability?
An authenticated attacker could create a crafted vhdx file and can call the vhdmp api with vhdx as one of the arguments.
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Security updates
10.0.17763.7678 — https://support.microsoft.com/help/5063877
10.0.20348.4052 — https://support.microsoft.com/help/5063880
10.0.20348.3989 — https://support.microsoft.com/help/5063812
10.0.19044.6216 — https://support.microsoft.com/help/5063709
10.0.22621.5768 — https://support.microsoft.com/help/5063875
10.0.26100.4946 — https://support.microsoft.com/help/5063878
10.0.26100.4851 — https://support.microsoft.com/help/5064010
10.0.25398.1791 — https://support.microsoft.com/help/5063899
10.0.10240.21100 — https://support.microsoft.com/help/5063889
10.0.14393.8330 — https://support.microsoft.com/help/5063871
6.2.9200.25622 — https://support.microsoft.com/help/5063906
6.3.9600.22725 — https://support.microsoft.com/help/5063950
Vulnerabilities 1
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High 7.8
Windows Hyper-V Elevation of Privilege Vulnerability
Heap-based buffer overflow 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-2025-53155 Windows Hyper-V Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53155
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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