ubuntu-cve-2026-42478
Vulnerability from osv_ubuntu
Published
2026-05-01 15:16
Modified
2026-05-20 15:27
Summary
Details

An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libocct-data-exchange-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "libocct-draw-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "libocct-foundation-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "libocct-modeling-algorithms-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "libocct-modeling-data-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "libocct-ocaf-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "libocct-visualization-7.3",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "occt-draw",
            "binary_version": "7.3.3+dfsg1-1build1"
          },
          {
            "binary_name": "occt-misc",
            "binary_version": "7.3.3+dfsg1-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "opencascade",
        "purl": "pkg:deb/ubuntu/opencascade@7.3.3+dfsg1-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.3.3+dfsg1-1",
        "7.3.3+dfsg1-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libocct-data-exchange-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "libocct-draw-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "libocct-foundation-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "libocct-modeling-algorithms-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "libocct-modeling-data-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "libocct-ocaf-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "libocct-visualization-7.5",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "occt-draw",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "occt-misc",
            "binary_version": "7.5.1+dfsg1-2ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "opencascade",
        "purl": "pkg:deb/ubuntu/opencascade@7.5.1+dfsg1-2ubuntu1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.5.1+dfsg1-2",
        "7.5.1+dfsg1-2ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libocct-data-exchange-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "libocct-draw-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "libocct-foundation-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "libocct-modeling-algorithms-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "libocct-modeling-data-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "libocct-ocaf-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "libocct-visualization-7.6t64",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "occt-draw",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          },
          {
            "binary_name": "occt-misc",
            "binary_version": "7.6.3+dfsg1-7.1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "opencascade",
        "purl": "pkg:deb/ubuntu/opencascade@7.6.3+dfsg1-7.1build1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.6.3+dfsg1-7",
        "7.6.3+dfsg1-7.1",
        "7.6.3+dfsg1-7.1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libocct-data-exchange-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "libocct-draw-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "libocct-foundation-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "libocct-modeling-algorithms-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "libocct-modeling-data-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "libocct-ocaf-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "libocct-visualization-7.8",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "occt-draw",
            "binary_version": "7.8.1+dfsg1-3"
          },
          {
            "binary_name": "occt-misc",
            "binary_version": "7.8.1+dfsg1-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "opencascade",
        "purl": "pkg:deb/ubuntu/opencascade@7.8.1+dfsg1-3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.8.1+dfsg1-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libocct-data-exchange-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-draw-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-foundation-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-ivtk-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-modeling-algorithms-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-modeling-data-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-ocaf-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "libocct-visualization-7.9",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "occt-draw",
            "binary_version": "7.9.2+dfsg-4"
          },
          {
            "binary_name": "occt-misc",
            "binary_version": "7.9.2+dfsg-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "opencascade",
        "purl": "pkg:deb/ubuntu/opencascade@7.9.2+dfsg-4?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.8.1+dfsg1-3",
        "7.9.2+dfsg-2",
        "7.9.2+dfsg-3",
        "7.9.2+dfsg-4"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.",
  "id": "UBUNTU-CVE-2026-42478",
  "modified": "2026-05-20T15:27:27Z",
  "published": "2026-05-01T15:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42478"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-42478"
    },
    {
      "type": "REPORT",
      "url": "https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-42478"
  ]
}



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