Medium severity · published Jun 21, 2026
CVE-2026-12814
Comfast CF-WR631AX V3 API Endpoint mbox-config system os command injection
6.3
CVSS
2.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CV
CF-WR631AX V3 · Comfast
2.7.0.0; 2.7.0.1; 2.7.0.2; 2.7.0.3; 2.7.0.4; 2.7.0.5; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12814
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12814
github.com
https://github.com/0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Report
vuldb.com
https://vuldb.com/cve/CVE-2026-12814
vuldb.com
https://vuldb.com/submit/837561
vuldb.com
https://vuldb.com/vuln/372608
vuldb.com
https://vuldb.com/vuln/372608/cti
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