{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.9.1"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 8744 of biosig.c on the current master branch (35a819fa), when the Tag is 3:\r\n\r\n\t\t\t\telse if (tag==3) {\r\n\t\t\t\t\t// character code\r\n\t\t\t\t\tchar v[17];\t\t// [1]\r\n\t\t\t\t\tif (len\u003e16) fprintf(stderr,\"Warning MFER tag2 incorrect length %i\u003e16\\n\",len);\r\n\t\t\t\t\tcurPos += ifread(\u0026v,1,len,hdr);\r\n\t\t\t\t\tv[len]  = 0;\r\n\r\nIn this case, the overflowed buffer is the newly-declared `v` \\[1\\] instead of `buf`. Since `v` is only 17 bytes large, much smaller values of `len` (even those encoded using a single octet) can trigger an overflow in this code path.",
  "id": "CVE-2025-54481",
  "modified": "2026-03-10T21:48:04.061206189Z",
  "published": "2025-08-25T14:15:33.700Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2234"
    },
    {
      "type": "EVIDENCE",
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}