Stack-Based Buffer Overflow in Biosig Project's libbiosig Product
CVE-2025-54488

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
25 August 2025

What is CVE-2025-54488?

A stack-based buffer overflow vulnerability has been identified in the MFER parsing mechanism of libbiosig version 3.9.0 and the latest Master Branch (commit 35a819fa). This flaw allows an attacker to exploit a specially crafted MFER file, potentially resulting in arbitrary code execution on the affected system. This issue occurs specifically when processing a particular tag, where improper length handling can lead to an overflow condition. Addressing this vulnerability is critical to maintaining system integrity and preventing unauthorized access.

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-2025-54488 : Stack-Based Buffer Overflow in Biosig Project's libbiosig Product