{
  "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 9090 of biosig.c on the current master branch (35a819fa), when the Tag is 64:\r\n\r\n                else if (tag==64)     //0x40\r\n                {\r\n                    // preamble\r\n                    char tmp[256];  // [1]\r\n                    curPos += ifread(tmp,1,len,hdr);\r\n\r\nIn this case, the overflowed buffer is the newly-declared `tmp` \\[1\\] instead of `buf`. While `tmp` is larger than `buf`, having a size of 256 bytes, a stack overflow can still occur in cases where `len` is encoded using multiple octets and is greater than 256.",
  "id": "CVE-2025-54490",
  "modified": "2026-03-10T21:51:20.104584051Z",
  "published": "2025-08-25T14:15:35.420Z",
  "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"
    }
  ]
}