Stack-Based Buffer Overflow in Biosig Project's libbiosig Product
CVE-2025-54482

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
25 August 2025

What is CVE-2025-54482?

A stack-based buffer overflow vulnerability has been identified within the MFER parsing functionality of the libbiosig library, specifically in version 3.9.0 and the current master branch. By crafting a malicious MFER file, an attacker could exploit this vulnerability to execute arbitrary code on an affected system. This issue arises in the implementation found in biosig.c, particularly when the Tag is set to 4, potentially posing significant risks to the integrity and security of systems utilizing this library.

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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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