Vulnerability-Lookup

PYSEC-2025-170

Vulnerability from pysec - Published: 2025-04-04 02:15 - Updated: 2026-05-21 14:54

Details

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD2Importer::InternReadFile in the library code/AssetLib/MD2/MD2Loader.cpp of the component Malformed File Handler. The manipulation of the argument Name leads to stack-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component.

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

CVE-2025-3196

JSON

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-2025-3196"
  ],
  "details": "A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD2Importer::InternReadFile in the library code/AssetLib/MD2/MD2Loader.cpp of the component Malformed File Handler. The manipulation of the argument Name leads to stack-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component.",
  "id": "PYSEC-2025-170",
  "modified": "2026-05-21T14:54:39.506012Z",
  "published": "2025-04-04T02:15:18.627Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/assimp/assimp/milestone/11"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/?id.303150"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/?submit.545368"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/assimp/assimp/issues/6069"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/assimp/assimp/issues/6069#issuecomment-2763273425"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/?ctiid.303150"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-3196 (GCVE-0-2025-3196)

Vulnerability from cvelistv5 – Published: 2025-04-04 01:00 – Updated: 2025-07-23 09:03

Title

Open Asset Import Library Assimp Malformed File MD2Loader.cpp InternReadFile stack-based overflow

Summary

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

5.3 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-04 14:36 UTC

CWE

CWE-121 - Stack-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/?id.303150	vdb-entrytechnical-description
https://vuldb.com/?ctiid.303150	signaturepermissions-required
https://vuldb.com/?submit.545368	third-party-advisory
https://github.com/assimp/assimp/issues/6069	exploitissue-tracking
https://github.com/assimp/assimp/issues/6069#issu…	issue-tracking
https://github.com/assimp/assimp/milestone/11	patch

Impacted products

1 product

Vendor	Product	Version
Open Asset Import Library	Assimp	Affected: 5.4.3

Credits

Chen Lihai

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-3196",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-04T14:36:56.864617Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-04T20:21:14.303Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/assimp/assimp/issues/6069"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "Malformed File Handler"
          ],
          "product": "Assimp",
          "vendor": "Open Asset Import Library",
          "versions": [
            {
              "status": "affected",
              "version": "5.4.3"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Chen Lihai"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD2Importer::InternReadFile in the library code/AssetLib/MD2/MD2Loader.cpp of the component Malformed File Handler. The manipulation of the argument Name leads to stack-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component."
        },
        {
          "lang": "de",
          "value": "Es wurde eine Schwachstelle in Open Asset Import Library Assimp 5.4.3 gefunden. Sie wurde als kritisch eingestuft. Es betrifft die Funktion Assimp::MD2Importer::InternReadFile in der Bibliothek code/AssetLib/MD2/MD2Loader.cpp der Komponente Malformed File Handler. Dank Manipulation des Arguments Name mit unbekannten Daten kann eine stack-based buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff hat dabei lokal zu erfolgen. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung. Als bestm\u00f6gliche Massnahme wird das Einspielen eines Upgrades empfohlen."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 4.3,
            "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C",
            "version": "2.0"
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              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-23T09:03:04.258Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-303150 | Open Asset Import Library Assimp Malformed File MD2Loader.cpp InternReadFile stack-based overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.303150"
        },
        {
          "name": "VDB-303150 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.303150"
        },
        {
          "name": "Submit #545368 | Open Asset Import Library Assimp 5.4.3 Stack-based Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.545368"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/assimp/assimp/issues/6069"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/assimp/assimp/issues/6069#issuecomment-2763273425"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/assimp/assimp/milestone/11"
        }
      ],
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          "time": "2025-04-03T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2025-04-03T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-07-23T11:04:48.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Open Asset Import Library Assimp Malformed File MD2Loader.cpp InternReadFile stack-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-3196",
    "datePublished": "2025-04-04T01:00:12.961Z",
    "dateReserved": "2025-04-03T10:58:31.836Z",
    "dateUpdated": "2025-07-23T09:03:04.258Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.