CVE-2025-5166: PYSEC-2025-173 - A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as…

CVE-2025-5166 · Severity: low · CVSS 3.1 · Published 2025-05-26

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MDCLoader.cpp of the component MDC File Parser. The manipulation of the argument pcVerts leads to out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

Technologies: pyassimp (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-5166 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-5166 being exploited in the wild.
How severe is CVE-2025-5166?
Low severity, with a CVSS score of 3.1, published 26 May 2025.
Which products and versions are affected?
pyassimp (PyPI) ECOSYSTEM:introduced=0,last_affected=5.4.3.
Is there a fix for CVE-2025-5166?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-5166?
Check whether you run pyassimp (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • pyassimp (PyPI) ECOSYSTEM:introduced=0,last_affected=5.4.3

Identifiers

  • CVE-2025-5166
  • PYSEC-2025-173

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