CVE-2025-54494 | A stack-based buffer overflow vulnerability exists in the MF… | CVSS 9.8 CRITICAL

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 9205 of biosig.c on the current master branch (35a819fa), when the Tag is 133: else if (tag==133) //0x85 { curPos += ifread(buf,1,len,hdr);

Metadata

CVE ID: CVE-2025-54494
State: PUBLISHED
Assigner: talos
Reserved: 2025-07-23 14:45 UTC
Published: 2025-08-25 13:53 UTC
Last updated: 2025-11-03 18:13 UTC
Primary CWE: CWE-121
CWE-121: Stack-based Buffer Overflow
Vendor / Product: The Biosig Project / libbiosig
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
The Biosig Project	libbiosig	—	3.9.0, Master Branch (35a819fa)

Weakness (CWE)

CWE	Source	Description
CWE-121	cna	CWE-121: Stack-based Buffer Overflow

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234 https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234