Stack-Based Buffer Overflow in The Biosig Project libbiosig Product
CVE-2025-54494

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
25 August 2025

What is CVE-2025-54494?

A stack-based buffer overflow vulnerability in the MFER parsing functionality of The Biosig Project's libbiosig can potentially allow attackers to execute arbitrary code through specially crafted MFER files. Triggering this vulnerability requires providing a malicious file that exploits vulnerabilities in the code processing MFER data structures, specifically affecting line 9205 of biosig.c in the master branch.

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Affected Version(s)

libbiosig 3.9.0

libbiosig Master Branch (35a819fa)

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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