PYSEC-2025-172

Vulnerability from pysec - Published: 2025-05-26 03:15 - Updated: 2026-05-21 14:54
VLAI?
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.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impacted products
Name purl
pyassimp pkg:pypi/pyassimp
Aliases
To clipboard 

{
  "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"
    }
  ]
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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