CVE-2025-66047: Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project…
CVE-2025-66047 · Severity: critical · CVSS 9.8 · Published 2025-12-11
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 131
No. Junglewise Threat Intelligence has no report of CVE-2025-66047 being exploited in the wild.
How severe is CVE-2025-66047?
Critical severity, with a CVSS score of 9.8, published 11 December 2025.
Which products and versions are affected?
Libbiosig Project Libbiosig. The advisory does not name versions.
Is there a fix for CVE-2025-66047?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-66047?
Check whether you run Libbiosig Project Libbiosig. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.