RCE in Comfast Cf-Wr631ax V3
CVE-2026-12814
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.020 (79.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Comfast Cf-Wr631ax V3 — versions 2.7.0.0, 2.7.0.1, 2.7.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/372608 (technical-description, vdb-entry)
- vuldb.com/vuln/372608/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-12814 (third-party-advisory)
- vuldb.com/submit/837561 (third-party-advisory)
- github.com/0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-An… (exploit)
Frequently asked questions
- What is CVE-2026-12814?
- CVE-2026-12814 is a medium-severity vulnerability in Comfast Cf-Wr631ax V3, classified under Command Injection. CVSS score: 6.3/10. Published 2026-06-21.
- How severe is CVE-2026-12814?
- Medium severity. CVSS v3 base score is 6.3 out of 10.