bullet3 VHACD utility: stack-based buffer overflow in OFF parser (LoadOFF)

{
  "id": "fc681d8819537c8c679c2eda2074df81746921b9ce09a9766606e9e4ffb5f33a",
  "url": "https://osv.dev/vulnerability/CVE-2025-8854",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bullet3 VHACD utility: stack-based buffer overflow in OFF parser (LoadOFF)",
    "summary": "Stack-based buffer overflow in LoadOFF in bulletphysics bullet3 before 3.26 on all platforms allows remote attackers to execute arbitrary code via a crafted OFF file with an overlong initial token processed by the VHACD test utility or invoked indirectly through PyBullet's vhacd function.",
    "evidence": "osv:CVE-2025-8854",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-8854",
      "aliases": [
        "CVE-2025-8854"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bulletphysics/bullet3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "2c204c49e56ed15ec5fcfa71d199ab6d6570b3f5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.25"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:bulletphysics:pybullet:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.25"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.25",
            "3.24",
            "3.23",
            "3.22b",
            "3.22a",
            "3.22",
            "3.21",
            "3.17",
            "3.05",
            "3.09",
            "3.08",
            "3.07",
            "3.06",
            "2.89",
            "2.88",
            "2.87",
            "2.86.1",
            "2.86",
            "2.85.1",
            "2.85",
            "2.84",
            "2.83.7",
            "2.83.6",
            "2.83.5",
            "2.83.4",
            "2.83"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-8854.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.039819514Z",
      "provider": "osv",
      "references": [
        "https://github.com/bulletphysics/bullet3/blob/master/Extras/VHACD/test/src/main_vhacd.cpp#L472",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8854.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-8854",
        "https://github.com/bulletphysics/bullet3/issues/4732"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-120"
        ],
        "cna_assigner": "CyberArk",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8854.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-8854",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498073,
  "published_at": "2025-08-11T04:24:02.469+00:00"
}