Command Injection in EDIMAX BR-6428nS V3

Executive Summary

CVE-2026-36734 is a command injection vulnerability found in the EDIMAX BR-6428nS V3 router running firmware version 1.15. It occurs in the web-based management interface, specifically within the WLAN configuration functionality. Due to insufficient input validation, an authenticated attacker with network access can submit specially crafted input containing shell metacharacters. This allows the attacker to execute arbitrary system commands on the device with the privileges of the web service.

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Impact Analysis

Exploiting this vulnerability can have serious impacts. An attacker could modify device settings, disrupt network operations, or establish persistent access to the router. This means the attacker could potentially control the device, interfere with your network's normal functioning, or maintain long-term unauthorized access.

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Detection Guidance

This vulnerability can be detected by monitoring the web-based management interface of the EDIMAX BR-6428nS V3 router for suspicious input containing shell metacharacters submitted to the WLAN configuration functionality.

Since the vulnerability requires authentication and crafted input, detection can involve checking logs for unusual or malformed requests to the WLAN configuration parameters.

Specific commands are not provided in the available resources.

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Mitigation Strategies

Immediate mitigation steps include restricting access to the router's web management interface to trusted users only, ensuring strong authentication is in place.

Avoid submitting any untrusted or suspicious input to the WLAN configuration functionality.

Monitor for firmware updates or patches from the vendor to address this command injection vulnerability.

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Compliance Impact

The provided information does not specify how the command injection vulnerability in the EDIMAX BR-6428nS V3 router affects compliance with common standards and regulations such as GDPR or HIPAA.

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