CVE-2025-66045

Name: CVE-2025-66045
Creator: NVD / NIST
Published: 2025-12-11T17:15:58.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2025-66045 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 65

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

0.46%

36.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Libbiosig Project	Libbiosig	< 3.9.2

References

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296Exploit, Third Party Advisory

Timeline

Published: Dec 11, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66045?

How severe is CVE-2025-66045?

CVE-2025-66045 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66045?

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-2025-66045?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST