Vulnerability record · CVE-2026-3798 · published 9 March 2026

CVE-2026-3798: Comfast cf-ac100 firmware injection vulnerability

Comfast · Cf Ac100 Firmware

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&section=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.

2.0 CVSS 4.0 Low EPSS 11% · top 4.3% CWE-74 · InjectionCWE-77 · Command injection

2.0CVSS 4.0 base score, v2 5.8

11%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References, 1 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Cf Ac100 Firmware Comfast

References

Link	Tags
https://github.com/jinhao118/cve/blob/main/ComFast%20CF-AC100-V2.6.0.8_1.md	ExploitThird Party Advisory
https://vuldb.com/?ctiid.349765	Permissions RequiredVDB Entry
https://vuldb.com/?id.349765	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.766443	Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2026-3798), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.