Oct 2025: Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2025-55328 Published on October 14, 2025
Windows Hyper-V Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Weakness Type
What is a Race Condition Vulnerability?
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CVE-2025-55328 has been classified to as a Race Condition vulnerability or weakness.
Products Associated with CVE-2025-55328
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Affected Versions
Microsoft Windows 10 Version 1507:- Version 10.0.10240.0 and below 10.0.10240.21161 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8519 is affected.
- Version 10.0.17763.0 and below 10.0.17763.7919 is affected.
- Version 10.0.19044.0 and below 10.0.19044.6456 is affected.
- Version 10.0.19045.0 and below 10.0.19045.6456 is affected.
- Version 10.0.22621.0 and below 10.0.22621.6060 is affected.
- Version 10.0.22631.0 and below 10.0.22631.6060 is affected.
- Version 10.0.22631.0 and below 10.0.22631.6060 is affected.
- Version 10.0.26100.0 and below 10.0.26100.6899 is affected.
- Version 10.0.26200.0 and below 10.0.26200.6899 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8519 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8519 is affected.
- Version 10.0.17763.0 and below 10.0.17763.7919 is affected.
- Version 10.0.17763.0 and below 10.0.17763.7919 is affected.
- Version 10.0.20348.0 and below 10.0.20348.4294 is affected.
- Version 10.0.25398.0 and below 10.0.25398.1913 is affected.
- Version 10.0.26100.0 and below 10.0.26100.6899 is affected.
- Version 10.0.26100.0 and below 10.0.26100.6899 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.