CVE-2026-12814

Comfast CF-WR631AX V3 API Endpoint mbox-config system os command injection

CVSS 5.3 MEDIUMEPSS 1.2%CWE-77 CWE-78

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected products

Comfast · CF-WR631AX V3

public PoCs found — 1

cve_referencegithub.com/0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Reportunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://github.com/0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Report https://vuldb.com/cve/CVE-2026-12814 https://vuldb.com/submit/837561 https://vuldb.com/vuln/372608 https://vuldb.com/vuln/372608/cti