Executive Summary

CVE-2026-10180 is a command injection vulnerability found in the TRENDnet TEW-432BRP router, specifically in the formSysCmd function accessed via the /goform/formSysCmd endpoint.

An attacker can send a specially crafted HTTP POST request containing a manipulated sysCmd parameter that the device executes without proper input validation.

This allows the attacker to execute arbitrary commands on the device remotely, such as rebooting the router, leading to potential system compromise.

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Impact Analysis

This vulnerability allows remote attackers to execute arbitrary commands on the affected TRENDnet router, which can lead to unauthorized control over the device.

Potential impacts include disruption of network services (e.g., forced reboot), compromise of the router’s integrity, and possibly further exploitation of the network connected to the device.

Since the device is no longer supported or patched by the vendor, the risk remains unmitigated.

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Detection Guidance

This vulnerability can be detected by monitoring for HTTP POST requests sent to the `/goform/formSysCmd` endpoint containing the `sysCmd` parameter with suspicious or unexpected values.

A practical detection method is to capture network traffic and look for POST requests targeting `/goform/formSysCmd` with parameters that attempt to inject commands, such as `sysCmd=reboot` or other shell commands.

For example, using command-line tools like curl or network monitoring tools, you can check if such requests are being made.

• Use tcpdump or Wireshark to filter HTTP POST requests to `/goform/formSysCmd`.
• Example tcpdump command: `tcpdump -A -s 0 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep '/goform/formSysCmd'`
• Use curl to test manually: `curl -X POST http://<device-ip>/goform/formSysCmd -d 'sysCmd=reboot'` to see if the device executes the command.

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Mitigation Strategies

Since the affected TRENDnet TEW-432BRP device is end-of-life and no patches or fixes are available, immediate mitigation steps focus on limiting exposure and preventing exploitation.

• Isolate the vulnerable device from untrusted networks, especially the internet.
• Disable remote management or access to the device's web interface if possible.
• Implement network-level controls such as firewall rules to block incoming HTTP POST requests to `/goform/formSysCmd`.
• Monitor network traffic for suspicious requests targeting the vulnerable endpoint.

Ultimately, consider replacing the device with a supported model to ensure security updates and patches.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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