What is CVE-2026-4466?

CVE-2026-4466 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 2026-03-20.

How severe is CVE-2026-4466?

Medium severity. CVSS v3 base score is 4.7 out of 10.

RCE in Comfast Cf-Ac100

CVE-2026-4466

A vulnerability has been found in Comfast CF-AC100 2.6.0.8. This affects an unknown function of the file /cgi-bin/mbox-config?method=SET&section=ntp_timezone. The manipulation leads to command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Published 2026-03-20 · last modified 2026-06-17.

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: 0.034 (88.5th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.041 · newest: 0.034 · change: -0.006

Affected products

Comfast Cf-Ac100 — versions 2.6.0.8

Weakness classification (CWE)

References

vuldb.com/ (vdb-entry)
vuldb.com/ (signature, permissions-required)
vuldb.com/ (third-party-advisory)
github.com/jinhao118/cve/blob/main/ComFast CF-AC100-V2.6.0.8_2.md (exploit)

Frequently asked questions

What is CVE-2026-4466?: CVE-2026-4466 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 2026-03-20.
How severe is CVE-2026-4466?: Medium severity. CVSS v3 base score is 4.7 out of 10.