RCE in Comfast Cf-Ac100
CVE-2026-3798
A vulnerability was detected in Comfast CF-AC100 2.6.0.8. This affects the function sub_44AC14 of the file /cgi-bin/mbox-config?method=SET§ion=ping_config of the component Request Path Handler. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may 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 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.109 (95.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.155 · newest: 0.109 · change: -0.045
Affected products
- Comfast Cf-Ac100 — versions 2.6.0.8
- Comfast Cf-Ac100 Firmware — versions 2.6.0.8
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 CF-AC100-V2.6.0.8_1.md (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-3798?
- CVE-2026-3798 is a medium-severity vulnerability in Comfast Cf-Ac100, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-03-09.
- How severe is CVE-2026-3798?
- Medium severity. CVSS v3 base score is 4.7 out of 10.