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CVE-2025-54494

CRITICALCVSS 9.8/10EPSS 0.64%

Last modified

CVE-2025-54494 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

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);

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.64%

45.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Libbiosig ProjectLibbiosig< 3.9.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2025-54494?
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);
How severe is CVE-2025-54494?
CVE-2025-54494 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.
How do I fix CVE-2025-54494?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-54494?

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Source: NVD / NIST