CVE-2025-66043

Published Dec 11, 2025 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
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 3

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Libbiosig Project
Libbiosig Project libbiosig
Weaknesses CWE-787
CPEs cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:*
Vendors & Products Libbiosig Project
Libbiosig Project libbiosig
Type Values Removed Values Added
First Time appeared The Biosig Project
The Biosig Project libbiosig
Vendors & Products The Biosig Project
The Biosig Project libbiosig
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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 3
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
talos
Published
Updated
Dec 11, 2025, 7:36 PM
Reserved
Nov 21, 2025, 10:23 AM
Status
Analyzed
Published
Dec 11, 2025, 5:15 PM
Modified
Oct 7, 2026, 8:10 PM