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CVE-2025-54491 – The Biosig Project libbiosig Stack-Based Buffer Overflow Vulnerability

The following table lists the changes that have been made to the
CVE-2025-54491 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Aug. 25, 2025

    Action Type Old Value New Value
    Added 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 9191 of biosig.c on the current master branch (35a819fa), when the Tag is 65:

    else if (tag==65) //0x41: patient event
    {
    // event table

    curPos += ifread(buf,1,len,hdr);
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-121
    Added Reference https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234
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