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CVE-2026-77004

Comfast CF-N1-S mbox-config sprintf command injection

HIGH
7.4
CVSS Score
Published: August 20, 2026 at 04:00 PM UTC
Updated: October 18, 2026 at 08:10 PM UTC
1 product affected across 1 vendorCF-N1-S

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Severity
HIGH7.4
Exploit prediction
EPSS 2%
SSVC
PoC

Description

A flaw has been found in Comfast CF-N1-S 2.6.0.1. This impacts the function sprintf of the file /cgi-bin/mbox-config?method=SET&section=ptest_sn. Executing a manipulation of the argument sn can lead to command injection. The attack can be launched remotely. The exploit has been published and may be used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/393623
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/393623/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-77004
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/880584
Exploit
Source: cverecord
https://github.com/lxiansheng488-bit/-/blob/main/%E5%8E%82%E5%95%86comefast%20%20CF-N1-S%20V2.pdf

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-77CWE-74

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