{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.28"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4677b3fd4030c52e0fe45a863c840c78fb56f9a3"
            }
          ],
          "repo": "https://github.com/tbeu/matio",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "An issue was discovered in matio 1.5.28. A heap-based memory corruption can occur in Mat_VarCreateStruct() when the nfields value does not match the actual number of strings in the fields array. This leads to out-of-bounds reads and invalid memory frees during cleanup, potentially causing a segmentation fault or heap corruption.",
  "id": "CVE-2025-50343",
  "modified": "2026-03-13T21:57:57.625964428Z",
  "published": "2025-12-30T20:16:00.217Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/tbeu/matio/issues/275"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/zakkanijia/POC/blob/main/matio/CVE-2025-50343/matio.md"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}