Chengdu Feiyuxing Technology Feiyu Star Router B-MB5E202-210322-r11656 send_order.cgi?parameter=del_expmac command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k1.10-

Summaryinfo

A vulnerability marked as critical has been reported in Chengdu Feiyuxing Technology Feiyu Star Router B-MB5E202-210322-r11656. Affected is an unknown function of the file /send_order.cgi?parameter=del_expmac. This manipulation of the argument mac causes command injection. This vulnerability is registered as CVE-2026-94138. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in Chengdu Feiyuxing Technology Feiyu Star Router B-MB5E202-210322-r11656 and classified as critical. Affected by this vulnerability is an unknown code of the file /send_order.cgi?parameter=del_expmac. The manipulation of the argument mac with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at uvxbywu62qm.feishu.cn. This vulnerability is known as CVE-2026-94138. The exploitation appears to be easy. The attack can be launched remotely. The exploitation requires an enhanced level of successful authentication. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

It is possible to download the exploit at uvxbywu62qm.feishu.cn. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-83831). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.6
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/20/2026 Advisory disclosed
09/20/2026 +0 days VulDB entry created
09/21/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: uvxbywu62qm.feishu.cn
Status: Not defined

CVE: CVE-2026-94138 (🔒)
GCVE (CVE): GCVE-0-2026-94138
GCVE (VulDB): GCVE-100-408055
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/20/2026 21:43
Updated: 09/21/2026 07:15
Changes: 09/20/2026 21:43 (56), 09/21/2026 07:15 (1)
Complete: 🔍
Submitter: Pbss
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #893913: Chengdu Feiyuxing Technology Co., Ltd Feiyu Star router B-MB5E202-210322-r11656 Command Injection (by Pbss)

Be aware that VulDB is the high quality source for vulnerability data.

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