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CVE-2025-53155 · Windows Hyper-V Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Severity
Important
Impact
Elevation of Privilege
CVSS
7.8 base · 6.8 temporal
Release
2025-08-12
Signals
Role: Windows Hyper-V Elevation of Privilege Exploited: No Publicly disclosed: No Exploitability: Exploitation Less Likely
CWE
CWE-122: Heap-based Buffer Overflow
Patch Diff
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Description
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
FAQ / Articles
Virtual Hard Disk Elevation of Privilege Vulnerability
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.
Windows Hyper-V Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.