affected:
- ecosystem_specific: {}
  package:
    ecosystem: PyPI
    name: pyassimp
    purl: pkg:pypi/pyassimp
  ranges:
  - events:
    - introduced: '0'
    - last_affected: 5.4.3
    type: ECOSYSTEM
  versions:
  - '0.1'
  - '3.3'
  - 4.1.1
  - 4.1.2
  - 4.1.3
  - 4.1.4
  - 5.2.5
aliases:
- CVE-2025-3549
details: A vulnerability, which was classified as critical, was found in Open Asset
  Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets
  of the file code/AssetLib/MD3/MD3Loader.cpp of the component 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.
id: PYSEC-2025-171
modified: '2026-05-21T14:54:39.562156Z'
published: '2025-04-14T03:15:16.823Z'
references:
- type: ADVISORY
  url: https://vuldb.com/?id.304590
- type: ADVISORY
  url: https://vuldb.com/?submit.546414
- type: REPORT
  url: https://github.com/assimp/assimp/issues/6070
- type: REPORT
  url: https://vuldb.com/?ctiid.304590
- type: EVIDENCE
  url: https://github.com/user-attachments/files/19580481/Assimp_MD3Importer_ValidateSurfaceHeaderOffsets-hbo.zip
severity:
- score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  type: CVSS_V3