0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Report

0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Report

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OS command injection in COMFAST CF-WR631AX V3 router (firmware V2.7.0.8) via the `destination` parameter of the ping_config API endpoint in /usr/bin/webmgnt, leading to remote code execution as root.
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CVE History

CVEPublishedCVSS v3CVSS v2
CVE-2026-12814↗
6.3 MEDIUM6.5 MEDIUM

A flaw has been found in Comfast CF-WR631AX V3 up to 2.7.0.8. This issue affects the function system of the file /cgi-bin/mbox-config?section=ping_config of the component API Endpoint. This manipulation of the argument destination causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.