{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "3.3.0"
              },
              {
                "fixed": "3.3.6"
              }
            ]
          },
          "events": [
            {
              "introduced": "c7d3eac70ccde2c4ed484c6638b83ba872f71464"
            },
            {
              "fixed": "027f33284f146d91bf983a58c8ea50c36154f339"
            }
          ],
          "repo": "https://github.com/academysoftwarefoundation/openexr",
          "type": "GIT"
        },
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "3.4.0"
              },
              {
                "fixed": "3.4.3"
              }
            ]
          },
          "events": [
            {
              "introduced": "20a65852895894434bea88613f6d29ac8e88bd6e"
            },
            {
              "fixed": "042c83d28dc8ad754f970800a651509ca61a0570"
            }
          ],
          "repo": "https://github.com/academysoftwarefoundation/openexr",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "3.3.0"
              },
              {
                "fixed": "3.3.6"
              },
              {
                "introduced": "3.4.0"
              },
              {
                "fixed": "3.4.3"
              }
            ]
          },
          "events": [
            {
              "introduced": "c7d3eac70ccde2c4ed484c6638b83ba872f71464"
            },
            {
              "fixed": "027f33284f146d91bf983a58c8ea50c36154f339"
            },
            {
              "introduced": "20a65852895894434bea88613f6d29ac8e88bd6e"
            },
            {
              "fixed": "042c83d28dc8ad754f970800a651509ca61a0570"
            }
          ],
          "repo": "https://github.com/openexr/openexr",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3h9h-qfvw-98hq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-457"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64181.json"
  },
  "details": "OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.",
  "id": "CVE-2025-64181",
  "modified": "2026-04-01T23:07:57.219378412Z",
  "published": "2025-11-10T21:23:04.248Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/23024726/archive0.zip"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/23024736/archive1.zip"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/23024740/archive2.zip"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/23024744/archive3.zip"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/23024746/archive4.zip"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3h9h-qfvw-98hq"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64181.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64181"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenEXR Makes Use of Uninitialized Memory"
}