{
  "cveId": "CVE-2025-54492",
  "url": "https://patchblox.com/security/cve/CVE-2025-54492",
  "summary": "CVE-2025-54492 is fixed in biosig on 1 platform by DEBIAN-CVE-2025-54492 (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 9141 of biosig.c on the current master branch (35a819fa), when the Tag is 67:\r \r                 else if (tag==67)     //0x43: Sample skew\r                 {\r                     int skew=0;     // [1]\r                     curPos \u002B= ifread(\u0026skew, 1, len,hdr);\r \r In this case, the address of the newly-defined integer \u0060skew\u0060 \\[1\\] is overflowed instead of \u0060buf\u0060. This means a stack overflow can occur using much smaller values of \u0060len\u0060 in this code path.",
  "published": "2025-08-25T14:15:35Z",
  "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": 0.52744,
  "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-2025-54492",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-54492",
      "released": "2025-08-25T14:15:35Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}