Stack-Based Buffer Overflow in The Biosig Project's libbiosig
CVE-2025-54483

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
25 August 2025

What is CVE-2025-54483?

A stack-based buffer overflow vulnerability in the MFER parsing function of The Biosig Project's libbiosig allows for arbitrary code execution. By crafting a malicious MFER file, an attacker can exploit this flaw, particularly evident in the biosig.c file at line 8759 within the current master branch. This vulnerability poses a significant security risk as it can lead to unauthorized actions on the affected system when triggered.

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-2025-54483 : Stack-Based Buffer Overflow in The Biosig Project's libbiosig