CVE-2025-54494
Critical
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 9205 of biosig.c on the current master branch (35a819fa), when the Tag is 133: else if (tag==133) //0x85 { curPos += ifread(buf,1,len,hdr);
SeverityCritical
CVSS9.8
Exploit probability—
ProductLibbiosig
PublishedAug 25, 2025
First seenAug 25, 2025
Weakness typeCWE-121CWE-121
How to fix
Update
- libbiosig_project libbiosig3.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libbiosig_project libbiosig | v < 3.9.1 | 3.9.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.