CVE-2026-2824
Published: 20 February 2026
Summary
CVE-2026-2824 is a medium-severity Injection (CWE-74) vulnerability in Comfast Cf-E7 Firmware. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 5.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SC-7 (Boundary Protection) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-2824 is a command injection vulnerability affecting the Comfast CF-E7 router firmware version 2.6.0.9. The issue exists in the sub_441CF4 function of the /cgi-bin/mbox-config?method=SET§ion=ping_config endpoint within the webmggnt component, where manipulation of the destination argument enables command injection.
The vulnerability is remotely exploitable over the network by an attacker possessing low privileges, requiring no user interaction. Exploitation allows limited impacts on confidentiality, integrity, and availability, as reflected in its CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L). It maps to CWE-74 (Improper Neutralization of Special Elements) and CWE-77 (Command Injection).
Advisories from VulDB and related submissions note that the vendor was contacted early about the disclosure but provided no response, with no patches mentioned. An exploit has been published, including on GitHub at https://github.com/jinhao118/cve/blob/main/ComFast%20Router_4.md, and may be used by attackers.
The vulnerability was published on 2026-02-20, and its public exploit availability heightens risk for exposed Comfast CF-E7 devices.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-7619
Vulnerability details
A flaw has been found in Comfast CF-E7 2.6.0.9. This affects the function sub_441CF4 of the file /cgi-bin/mbox-config?method=SET§ion=ping_config of the component webmggnt. Executing a manipulation of the argument destination can lead to command injection. The attack may be performed from…
more
remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection in exposed router web CGI endpoint (ping_config) directly enables remote exploitation of public-facing apps (T1190) and arbitrary Unix shell command execution (T1059.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation and sanitization of the destination argument in /cgi-bin/mbox-config to block command injection payloads.
Restricts network access to the exposed webmggnt CGI endpoint, preventing remote exploitation of the vulnerable ping_config function.
Disables or removes unnecessary functions such as the ping_config SET method that enable the command injection vector.