{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2019-07-08"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, the function Iec10x_Scheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This may be exploited to trigger a denial-of-service or memory corruption.",
  "id": "CVE-2025-63927",
  "modified": "2026-03-15T21:45:43.355404883Z",
  "published": "2025-11-12T19:15:37.677Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://songsong.host/mybugs/CVE-2025-63927.html"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/airpig2011/IEC104/issues/20"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}