RCE in Comfast Cf-N1
CVE-2026-2535
A vulnerability was found in Comfast CF-N1 V2 2.6.0.2. The impacted element is the function sub_44AB9C of the file /cgi-bin/mbox-config?method=SET§ion=ptest_channel. The manipulation of the argument channel results in command injection. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
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: 0.140 (96.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.135 · newest: 0.140 · change: +0.005
Affected products
- Comfast Cf-N1 — versions 2
- Comfast Cf-N1 Firmware — versions 2.6.0.2
- Comfast Cf-N1 V2 — versions 2.6.0.2
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/jinhao118/cve/blob/main/ComFast Router_2.md (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-2535?
- CVE-2026-2535 is a medium-severity vulnerability in Comfast Cf-N1, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-02-16.
- How severe is CVE-2026-2535?
- Medium severity. CVSS v3 base score is 6.3 out of 10.