CVE-2026-12814

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

State: Published
Severity: 5.3 Medium
Published: Jun 21, 2026
Updated: Jun 22, 2026
Reserved: Jun 21, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	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	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-78 OS Command Injection
CWE-77 Command Injection

Affected Products

Product	Versions
CF-WR631AX V3Comfast	2.7.0.0Affected 2.7.0.1Affected 2.7.0.2Affected 2.7.0.3Affected 2.7.0.4Affected 2.7.0.5Affected 2.7.0.6Affected 2.7.0.7Affected 2.7.0.8Affected

References

VDB-372608 | Comfast CF-WR631AX V3 API Endpoint mbox-config system os command injectionvdb-entrytechnical-description
VDB-372608 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-12814 | CVE Analysis and Reportthird-party-advisory
Submit #837561 | COMFAST CF-WR631AX V3-V2.7.0.8 OS Command Injectionthird-party-advisory
https://github.com/0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Reportexploit

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.