Stack-based Buffer Overflow in The Biosig Project Product
CVE-2025-54480

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
25 August 2025

What is CVE-2025-54480?

A stack-based buffer overflow has been identified in the MFER parsing functionality of the libbiosig library, which allows for arbitrary code execution. The vulnerability arises when a specially crafted MFER file is processed, leading to the exploitation of the code on line 8719 of biosig.c in the master branch. Attackers can leverage this flaw by providing a malicious file that contains a corrupted MFER tag, resulting in improper length handling and potential unauthorized code execution.

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.
.
CVE-2025-54480 : Stack-based Buffer Overflow in The Biosig Project Product