Stack-Based Buffer Overflow in Biosig Project libbiosig Affects User Security

CVE-2025-54492

What is CVE-2025-54492?

A stack-based buffer overflow vulnerability is present in the MFER parsing functionality of the Biosig Project's libbiosig version 3.9.0 and its Master Branch. This issue arises when processing a specially crafted MFER file, enabling an attacker to execute arbitrary code. During the parsing, specifically at line 9141 of biosig.c, the overflow occurs when the address of the locally defined integer 'skew' is improperly handled instead of the designated buffer. A malicious file with carefully constructed parameters can exploit this vulnerability, leading to potential security breaches.

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