CVE-2025-66043 is a critical stack-based buffer overflow vulnerability affecting the MFER parsing functionality within The Biosig Project's libbiosig 3.9.1. An attacker can achieve arbitrary code execution by providing a specially crafted MFER file. This vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness and potential future exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.9.2CPE matchmatch criteria | cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.