Stack-Based Buffer Overflow in Biosig Project Library by The Biosig Project
CVE-2025-66046

9.8CRITICAL

Key Information:

Vendor

The BiOSig Project

Status
LibbiOSig
Vendor
CVE Published:
11 December 2025

What is CVE-2025-66046?

The Biosig Project's libbiosig version 3.9.1 is susceptible to multiple stack-based buffer overflow vulnerabilities within its MFER parsing functionality. An attacker can exploit these vulnerabilities by supplying a specially crafted MFER file, which may lead to arbitrary code execution. This allows for potential unauthorized actions and system compromise, highlighting significant security risks associated with the affected library.

Affected Version(s)

libbiosig 3.9.1

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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CVE-2025-66046 : Stack-Based Buffer Overflow in Biosig Project Library by The Biosig Project