CVE-2025-54489 – The Biosig Project libbiosig MFER Parsing Stack-Based Buffer Overflow Vulnerability

CVE ID : CVE-2025-54489

Published : Aug. 25, 2025, 2:15 p.m. | 19 minutes ago

Description : A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 8970 of biosig.c on the current master branch (35a819fa), when the Tag is 63:

else if (tag==63) {
uint8_t tag2=255, len2=255;

count = 0;
while ((count
Severity: 9.8 | CRITICAL

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