Aug 2025: Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2025-53723 Published on August 12, 2025
Windows Hyper-V Elevation of Privilege Vulnerability
Numeric truncation error in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Weakness Types
Numeric Truncation Error
Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion. When a primitive is cast to a smaller primitive, the high order bits of the large value are lost in the conversion, potentially resulting in an unexpected value that is not equal to the original value. This value may be required as an index into a buffer, a loop iterator, or simply necessary state data. In any case, the value cannot be trusted and the system will be in an undefined state. While this method may be employed viably to isolate the low bits of a value, this usage is rare, and truncation usually implies that an implementation error has occurred.
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Products Associated with CVE-2025-53723
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Affected Versions
Microsoft Windows 10 Version 1507:- Version 10.0.10240.0 and below 10.0.10240.21100 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8330 is affected.
- Version 10.0.17763.0 and below 10.0.17763.7678 is affected.
- Version 10.0.19044.0 and below 10.0.19044.6216 is affected.
- Version 10.0.19045.0 and below 10.0.19045.6216 is affected.
- Version 10.0.22621.0 and below 10.0.22621.5768 is affected.
- Version 10.0.22631.0 and below 10.0.22631.5768 is affected.
- Version 10.0.22631.0 and below 10.0.22631.5768 is affected.
- Version 10.0.26100.0 and below 10.0.26100.4946 is affected.
- Version 6.2.9200.0 and below 6.2.9200.25622 is affected.
- Version 6.2.9200.0 and below 6.2.9200.25622 is affected.
- Version 6.3.9600.0 and below 6.3.9600.22725 is affected.
- Version 6.3.9600.0 and below 6.3.9600.22725 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8330 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8330 is affected.
- Version 10.0.17763.0 and below 10.0.17763.7678 is affected.
- Version 10.0.17763.0 and below 10.0.17763.7678 is affected.
- Version 10.0.20348.0 and below 10.0.20348.4052 is affected.
- Version 10.0.25398.0 and below 10.0.25398.1791 is affected.
- Version 10.0.26100.0 and below 10.0.26100.4946 is affected.
- Version 10.0.26100.0 and below 10.0.26100.4946 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.