{
  "cveId": "CVE-2025-54487",
  "url": "https://patchblox.com/security/cve/CVE-2025-54487",
  "summary": "CVE-2025-54487 is fixed in biosig on 1 platform by DEBIAN-CVE-2025-54487 (version 3.9.5-1), released August 25, 2025. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "biosig: A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig...",
  "description": "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 8842 of biosig.c on the current master branch (35a819fa), when the Tag is 12:\r \r                 else if (tag==12)    //0x0C\r                 {\r                     // sampling resolution\r                     if (len\u003E6) fprintf(stderr,\u0022Warning MFER tag12 incorrect length %i\u003E6\\n\u0022,len);\r                     val32   = 0;\r                     int8_t  v8;\r                     curPos \u002B= ifread(\u0026UnitCode,1,1,hdr);\r                     curPos \u002B= ifread(\u0026v8,1,1,hdr);\r                     curPos \u002B= ifread(buf,1,len-2,hdr);\r \r In addition to values of \u0060len\u0060 greater than 130 triggering a buffer overflow, a value of \u0060len\u0060 smaller than 2 will also trigger a buffer overflow due to an integer underflow when computing \u0060len-2\u0060 in this code path.",
  "published": "2025-08-25T14:15:34Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00682,
  "epssPercentile": 0.52745,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "biosig",
      "release": "Debian 14",
      "fixedVersion": "3.9.5-1",
      "fix": "DEBIAN-CVE-2025-54487",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-54487",
      "released": "2025-08-25T14:15:34Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}