Aug 2025: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2025-53134 Published on August 12, 2025
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Weakness Types
What is a TOCTTOU Vulnerability?
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state. This weakness can be security-relevant when an attacker can influence the state of the resource between check and use. This can happen with shared resources such as files, memory, or even variables in multithreaded programs.
CVE-2025-53134 has been classified to as a TOCTTOU vulnerability or weakness.
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2025-53134 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2025-53134
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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 6.1.7601.0 and below 6.1.7601.27872 is affected.
- Version 6.1.7601.0 and below 6.1.7601.27872 is affected.
- Version 6.0.6003.0 and below 6.0.6003.23471 is affected.
- Version 6.0.6003.0 and below 6.0.6003.23471 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.