Command Injection Vulnerability in Feiyu Star Router by Chengdu Feiyuxing Technology
CVE-2026-94139

5.3MEDIUM

Key Information:

Vendor

Chengdu Feiyuxing Technology

Status
Feiyu Star Router
Vendor
CVE Published:
21 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-94139?

A command injection vulnerability has been discovered in the cookie handler functionality of the Feiyu Star Router B-MB5E202-210322-r11656. Specifically, the issue arises when the session_id parameter within the /send_order.cgi endpoint is manipulated. This flaw allows attackers to execute arbitrary commands remotely, posing a significant risk to the integrity and security of the device. Despite early notification to the vendor, there has been no response or indication of a fix, leaving users vulnerable to potential exploitation.

Affected Version(s)

Feiyu Star Router B-MB5E202-210322-r11656

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-94139 - Proof of Concept

References

https://vuldb.com/vuln/408056
vdb-entrytechnical-description
https://vuldb.com/vuln/408056/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-94139
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

liyunpeng (VulDB User)
VulDB CNA Team
.