What’s Vulnerable › Vulnerabilities

CVE-2025-66045

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-11 · updated 2026-10-07
• Weakness: CWE-121

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

Affected products

• The Biosig Project libbiosig: before 3.9.2 — fixed in 3.9.2

How to fix

Upgrade to a fixed version: The Biosig Project libbiosig 3.9.2. Check the vendor advisory for mitigations.

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296
• https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296

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