Python plistlib OOM DoS via malicious plist
CVE-2025-13837 Published on December 1, 2025
Out-of-memory when loading Plist
When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues
Vulnerability Analysis
CVE-2025-13837 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2025-13837 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2025-13837
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Affected Versions
Python Software Foundation CPython:- Before 3.10.20 is affected.
- Version 3.11.0 and below 3.11.15 is affected.
- Version 3.12.0 and below 3.12.13 is affected.
- Version 3.13.0 and below 3.13.10 is affected.
- Version 3.14.0 and below 3.14.1 is affected.
- Version 3.15.0a1 and below 3.15.0a3 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.