CVE-2025-66045 | Several stack-based buffer overflow vulnerabilities exists i… | CVSS 9.8 CRITICAL

Description

Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 65

Metadata

CVE ID: CVE-2025-66045
State: PUBLISHED
Assigner: talos
Reserved: 2025-11-21 10:23 UTC
Published: 2025-12-11 16:43 UTC
Last updated: 2025-12-11 19:36 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: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
The Biosig Project	libbiosig	—	3.9.1

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-2025-2296 https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296