CVE-2026-19976: COMFAST CF-N1-S mbox-config sub_44A968 command injection

Severity: medium (CVSS 6.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-17 · updated 2026-08-20
Weakness: CWE-74

Description

A security vulnerability has been detected in COMFAST CF-N1-S 2.6.0.1. Impacted is the function sub_44A968 of the file /cgi-bin/mbox-config?method=SET&section=ptest_macaddress. Such manipulation of the argument macaddress leads to command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Comfast CF-N1-S: 2.6.0.1

References

https://github.com/1ChaoRen1/IOT/blob/main/CF-N1-S-V2.6.0.1%20.pdf
https://vuldb.com/cve/CVE-2026-19976
https://vuldb.com/submit/873821
https://vuldb.com/vuln/391155
https://vuldb.com/vuln/391155/cti

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