CVE-2026-94139Network attack vector

Authenticated command execution via manipulated session_id

Published Sep 21, 2026 · Updated Sep 21, 2026

Command injection in Feiyu Star Router B-MB5E202-210322-r11656 allows remote authenticated users to execute commands over the network. The Cookie Handler passes a manipulated session_id value from /send_order.cgi?parameter=loginout into a command without neutralizing command syntax. Low-privilege interface access is required, and successful exploitation can alter router behavior or interrupt service.

CVSS severityUnavailable
Unscored
EPSS probability1.16%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Feiyu Star Router B-MB5E202-210322-r11656 allows remote authenticated users to execute commands over the network. The Cookie Handler passes a manipulated session_id value from /send_order.cgi?parameter=loginout into a command without neutralizing command syntax. Low-privilege interface access is required, and successful exploitation can alter router behavior or interrupt service.

The record

CVE
CVE-2026-94139
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Chengdu Feiyuxing Technology Co., Ltd.
Product
Feiyu Star Router
Classifications
CWE-74, CWE-77, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=B-MB5E202-210322-r11656

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chengdu Feiyuxing Technology Co., Ltd. · Feiyu Star Routerversion=B-MB5E202-210322-r11656

Published CVSS scores

7.4VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P
7.4VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Injection
CWE-77Command Injection
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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