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CVE-2025-66043

Quick assessment

Affected
The Biosig Project libbiosig
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libbiosig是BioSig Project开源的一个用于生物医学信号处理的开源软件库。具有生物信号分析功能。 libbiosig 3.9.1版本存在安全漏洞，该漏洞源于MFER解析功能存在栈缓冲区溢出，可能导致执行任意代码。

CVSS 9.8 · Critical EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-66043

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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 3
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
libbiosig 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libbiosig是BioSig Project开源的一个用于生物医学信号处理的开源软件库。具有生物信号分析功能。 libbiosig 3.9.1版本存在安全漏洞，该漏洞源于MFER解析功能存在栈缓冲区溢出，可能导致执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
The Biosig Project libbiosig 3.9.1 -

II. Public POCs for CVE-2025-66043

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III. Intelligence Information for CVE-2025-66043

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Other References for CVE-2025-66043 (1)

Same Patch Batch · The Biosig Project · 2025-12-11 · 6 CVEs total

CVE-2025-66048 9.8 CRITICAL libbiosig 安全漏洞
CVE-2025-66044 9.8 CRITICAL libbiosig 安全漏洞
CVE-2025-66045 9.8 CRITICAL libbiosig 安全漏洞
CVE-2025-66047 9.8 CRITICAL libbiosig 安全漏洞
CVE-2025-66046 9.8 CRITICAL libbiosig 安全漏洞

IV. Related Vulnerabilities

Same product: libbiosig
Same vendor: The Biosig Project
Same weakness: CWE-121

V. Comments for CVE-2025-66043

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