CVE-2026-94139
Received Received - Intake

Command Injection in Feiyu Star Router

Publication date: 2026-09-21

Last updated on: 2026-09-21

Assigner: VulDB

Description
A weakness has been identified in Chengdu Feiyuxing Technology Feiyu Star Router B-MB5E202-210322-r11656. Affected is an unknown function of the file /send_order.cgi?parameter=loginout of the component Cookie Handler. This manipulation of the argument session_id causes command injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

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Meta Information

Published
2026-09-21
Last Modified
2026-09-21
Generated
2026-09-21
AI Q&A
2026-09-21
EPSS Evaluated
N/A
NVD
CVE-2026-94139
EUVD
EUVD-2026-83832

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
chengdu_feiyuxing_technology feiyu_star_router b-mb5e202-210322-r11656

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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.

Attack-Flow Graph

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Executive Summary

This vulnerability is a command injection flaw in the Chengdu Feiyuxing Technology Feiyu Star Router B-MB5E202-210322-r11656. It exists in the Cookie Handler component, specifically in the /send_order.cgi?parameter=loginout file where the session_id argument can be manipulated to execute arbitrary commands. The issue allows remote attackers to inject and execute commands due to insufficient input validation.

Detection Guidance

Detect this vulnerability by checking for command injection attempts in the /send_order.cgi?parameter=loginout endpoint. Look for unusual session_id values or requests containing shell metacharacters like semicolons, pipes, or command substitutions. Inspect router logs for POST requests to this path with suspicious parameters.

Impact Analysis

This vulnerability could allow an attacker to execute arbitrary commands on the affected router remotely. This may lead to unauthorized access, data theft, or disruption of network services. Since the exploit is publicly available, the risk of exploitation is higher.

Compliance Impact

The vulnerability involves command injection via a manipulated session_id in the Cookie Handler of the Feiyu Star Router. This could allow unauthorized access or control of the device, potentially leading to data breaches or unauthorized data exposure. Such risks may impact compliance with GDPR (data protection) and HIPAA (healthcare data security) by compromising confidentiality and integrity of sensitive information.

Mitigation Strategies

Immediately disable remote access to the router's web interface if possible. Update the router firmware to the latest version if an update is available. Block external access to the /send_order.cgi endpoint via firewall rules. Monitor network traffic for exploit attempts targeting this vulnerability.

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