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-2025-5165
details: A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified
  as problematic. This issue affects the function MDCImporter::ValidateSurfaceHeader
  of the file assimp/code/AssetLib/MDC/MDCLoader.cpp. The manipulation of the argument
  pcSurface2 leads to out-of-bounds read. Attacking locally is a requirement. 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.
id: PYSEC-2025-172
modified: '2026-05-21T14:54:39.618942Z'
published: '2025-05-26T03:15:36.373Z'
references:
- type: ADVISORY
  url: https://vuldb.com/?id.310253
- type: ADVISORY
  url: https://vuldb.com/?submit.578000
- type: REPORT
  url: https://github.com/assimp/assimp/issues/6128
- type: REPORT
  url: https://github.com/assimp/assimp/issues/6167
- type: REPORT
  url: https://vuldb.com/?ctiid.310253
- type: EVIDENCE
  url: https://github.com/user-attachments/files/20204942/reproducer.zip
severity:
- score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  type: CVSS_V3