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COMFAST CF-N1-S EUVDEUVD-2026-60566

| CVE-2026-75094 HIGH
Command Injection (CWE-77)
2026-08-18 cna@vuldb.com GHSA-qp57-ch36-236j
8.5
CVSS 4.0 · Vendor: vuldb
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Severity by source

Vendor (vuldb) PRIMARY
8.5 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/V:X/RE:X/U:X
vuln.today AI
9.1 CRITICAL

PR:H because admin credentials are required; S:C because full router control enables downstream network traffic manipulation beyond the device itself.

3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 18, 2026 - 02:28 vuln.today
CVE Published
Aug 18, 2026 - 02:17 cve.org
HIGH 8.5

DescriptionCVE.org

A flaw has been found in COMFAST CF-N1-S 2.6.0.1. This impacts the function sub_44B438 of the file /cgi-bin/mbox-config?method=SET&section=ptest_ssid of the component CGI Interface. This manipulation of the argument ssid causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used.

AnalysisAI

OS command injection in the COMFAST CF-N1-S 2.6.0.1 router's CGI interface enables network-accessible, authenticated attackers to execute arbitrary operating system commands by manipulating the ssid parameter at the /cgi-bin/mbox-config?method=SET&section=ptest_ssid endpoint. The underlying function sub_44B438 passes unsanitized user input directly to a shell, resulting in full device compromise with scope impact extending to downstream network systems. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain admin credentials via default password or credential attack
Delivery
Authenticate to CGI management web interface
Exploit
Send crafted HTTP request with injected ssid parameter
Execution
Trigger unsanitized input in sub_44B438 function
Persist
Execute arbitrary OS commands via shell injection
Impact
Achieve full router control and network pivot

Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to authenticate to the router's management interface with high-privilege (administrator-level) credentials prior to issuing the malicious request, as confirmed by the CVSS PR:H metric. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H with an 8.5 score accurately captures the threat profile: network reachable, low attack complexity, no user interaction, but requiring high-privilege authentication. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has acquired administrator credentials to the COMFAST CF-N1-S - whether through default credential exploitation, credential stuffing, or prior compromise - sends a crafted HTTP request to `/cgi-bin/mbox-config?method=SET&section=ptest_ssid` with an `ssid` value containing shell metacharacters such as `; id #` or backtick sequences. Function `sub_44B438` passes the unsanitized value directly to a shell command, executing the injected payload with CGI process privileges and granting the attacker arbitrary OS command execution and full device control. …
Remediation No vendor-released patch has been identified at time of analysis for COMFAST CF-N1-S firmware 2.6.0.1. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all COMFAST CF-N1-S routers in your network and identify systems running version 2.6.0.1, then immediately restrict network access to the /cgi-bin/mbox-config endpoint using firewall rules to prevent exploitation. …

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EUVD-2026-60566 vulnerability details – vuln.today

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