Stack-Based Buffer Overflow in Biosig Project Library by Biosig Project
CVE-2025-66044

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
11 December 2025

What is CVE-2025-66044?

Multiple stack-based buffer overflow vulnerabilities exist in the MFER parsing functionality of the Biosig Project's libbiosig version 3.9.1. These vulnerabilities can be exploited by an attacker through specially crafted MFER files, potentially leading to arbitrary code execution. An untrusted and malformed file can trigger these issues, emphasizing the necessity for robust input validation mechanisms in software handling MFER formats. Users are advised to review their systems promptly and implement necessary patches to safeguard against potential exploitation.

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Affected Version(s)

libbiosig 3.9.1

References

https://talosintelligence.com/vulnerability_reports/TALOS...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Discovered by Mark Bereza and Lilith >_> of Cisco Talos.
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