CVE-2025-3159: PYSEC-2025-263 - A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp…

CVE-2025-3159 · Severity: low · CVSS 3.1 · Published 2025-04-03

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASE::Parser::ParseLV4MeshBonesVertices of the file code/AssetLib/ASE/ASEParser.cpp of the component ASE File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is e8a6286542924e628e02749c4f5ac4f91fdae71b. It is recommended to apply a patch to fix this issue.

Technologies: pyassimp (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-3159 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-3159 being exploited in the wild.
How severe is CVE-2025-3159?
Low severity, with a CVSS score of 3.1, published 3 April 2025.
Which products and versions are affected?
pyassimp (PyPI) ECOSYSTEM:introduced=0,last_affected=5.4.3.
Is there a fix for CVE-2025-3159?
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-2025-3159?
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-2025-3159
  • PYSEC-2025-263

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