CVE-2026-75094
Received Received - Intake

Command Injection in COMFAST CF-N1-S Router

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: VulDB

Description
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.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-75094
EUVD
EUVD-2026-60566

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
comfast cf-n1-s 2.6.0.1

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

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Executive Summary

This vulnerability is an OS command injection flaw in the COMFAST CF-N1-S device version 2.6.0.1. It exists in the CGI interface function sub_44B438, specifically in the /cgi-bin/mbox-config endpoint when the method is SET and section is ptest_ssid. The vulnerability allows an attacker to inject malicious commands via the ssid argument, enabling remote code execution.

Detection Guidance

Detecting this vulnerability requires checking for the presence of COMFAST CF-N1-S devices running version 2.6.0.1 and testing the CGI interface for command injection via the ssid parameter. Use network scanning tools like nmap to identify affected devices. Test with curl commands targeting /cgi-bin/mbox-config?method=SET&section=ptest_ssid with crafted ssid values to observe command execution.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary commands on the affected device. This could lead to full system compromise, unauthorized access, data theft, or disruption of device functionality. Since the exploit is publicly available, the risk of exploitation is high.

Compliance Impact

The vulnerability allows remote command injection via the ssid parameter in the CGI interface, which could lead to unauthorized access and data exfiltration. This could violate GDPR by exposing personal data without consent and HIPAA by compromising protected health information if exploited.

Mitigation Strategies

Immediately update the COMFAST CF-N1-S firmware to the latest version. Disable remote access to the CGI interface if possible. Restrict network access to the device using firewalls. Monitor network traffic for suspicious activity targeting the vulnerable endpoint. Apply network segmentation to isolate the device from critical systems.

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