What is CVE-2025-66047?

CVE-2025-66047 is a critical-severity vulnerability in Libbiosig_project Libbiosig, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-12-11.

How severe is CVE-2025-66047?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Libbiosig_project Libbiosig

CVE-2025-66047

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 fil…

Vulnerability class: Buffer Overflow

EPSS: 0.005 (36.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Libbiosig_project Libbiosig
The Biosig Project Libbiosig — versions 3.9.1

Weakness classification (CWE)

References

talos-cna@cisco.com (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-66047?: CVE-2025-66047 is a critical-severity vulnerability in Libbiosig_project Libbiosig, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-12-11.
How severe is CVE-2025-66047?: Critical severity. CVSS v3 base score is 9.8 out of 10.