Vulnerability Database

299,688

Total vulnerabilities in the database

CVE-2025-54481

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:

else if (tag==3) { // character code char v[17]; // [1] if (len>16) fprintf(stderr,"Warning MFER tag2 incorrect length %i>16\n",len); curPos += ifread(&v,1,len,hdr); v[len] = 0;

In 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.

  • Published: Aug 25, 2025
  • Updated: Nov 4, 2025
  • CVE: CVE-2025-54481
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software From Fixed in
libbiosig_project / libbiosig - 3.9.1