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CVE-2025-53557

CRITICALCVSS 9.8/10EPSS 0.69%

Last modified

CVE-2025-53557 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A heap-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 0.69% chance of exploitation in the next 30 days.

Description

A heap-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.

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
0.69%

48.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Libbiosig ProjectLibbiosig3.9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2025-53557?
A heap-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.
How severe is CVE-2025-53557?
CVE-2025-53557 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.
How do I fix CVE-2025-53557?
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.

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Source: NVD / NIST