CVE-2025-54486

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 8824 of biosig.c on the current master branch (35a819fa), when the Tag is 11: else if (tag==11) //0x0B { // Fs if (len>6) fprintf(stderr,"Warning MFER tag11 incorrect length %i>6\n",len); double fval; curPos += ifread(buf,1,len,hdr);

Affected products

Debian, Libbiosig

Libbiosig Project Libbiosig

< 3.9.1

Fix

Available

CVSS 3.1

9.8 CRITICAL

EPSS

0.7% (49th percentile)

Weakness

CWE-121

NVD status

Modified

Published

2025-08-25

No exploit for CVE-2025-54486 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.