Aug 2025: Windows Distributed Transaction Coordinator (MSDTC) Information Disclosure Vulnerability
CVE-2025-50166 Published on August 12, 2025
Windows Distributed Transaction Coordinator (MSDTC) Information Disclosure Vulnerability
Integer overflow or wraparound in Windows Distributed Transaction Coordinator allows an authorized attacker to disclose information over a network.
Weakness Type
Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Products Associated with CVE-2025-50166
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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.