Vulnerability · Published Aug 21, 2026 · Assigned by VulDB
CVE-2026-77683Comfast CF-N1-S mbox-config system command injection
Critical 9.9
In plain English
A critical-severity command injection in CF-N1-S from Comfast. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)2.9%top 13.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A security flaw has been discovered in Comfast CF-N1-S 2.6.0.1. Affected by this issue is the function system of the file /cgi-bin/mbox-config?method=SET§ion=ntp_timezone. The manipulation of the argument timestr results in command injection. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
Affected products (as reported)
Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-394033 | Comfast CF-N1-S mbox-config system command injection vdb-entry, technical-description
- VDB-394033 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-77683 | CVE Analysis and Report third-party-advisory
- Submit #881058 | Comfast CF-N1-S V2.6.0.1 Command Injection third-party-advisory
- https://github.com/AdminSafe/CVE/issues/8 exploit, issue-tracking