OS Command Injection in Comfast CF-WR631AX V3 Leading to Remote Exploit
CVE-2026-12814

5.3MEDIUM

Key Information:

Vendor

Comfast

Status
Cf-wr631ax V3
Vendor
CVE Published:
21 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12814?

A security vulnerability in the Comfast CF-WR631AX V3 router impacts the API Endpoint due to improper handling of input parameters in the mbox-config system. An attacker can exploit this vulnerability to inject arbitrary OS commands remotely, leading to potential system compromise. Despite attempts to alert the vendor about this critical issue, there has been no response, and public exploit details are now available.

Affected Version(s)

CF-WR631AX V3 2.7.0.0

CF-WR631AX V3 2.7.0.1

CF-WR631AX V3 2.7.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-12814 - Proof of Concept

References

https://vuldb.com/vuln/372608
vdb-entrytechnical-description
https://vuldb.com/vuln/372608/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-12814
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

0xcc12138 (VulDB User)
VulDB CNA Team
.