RCE in Chengdu Feiyuxing Technology Feiyu Star Router
CVE-2026-94138
A security flaw has been discovered in Chengdu Feiyuxing Technology Feiyu Star Router B-MB5E202-210322-r11656. This impacts an unknown function of the file /send_order.cgi?parameter=del_expmac. The manipulation of the argument mac results in command injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.021 (81.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Chengdu Feiyuxing Technology Feiyu Star Router — versions B-MB5E202-210322-r11656
Weakness classification (CWE)
References
- vuldb.com/vuln/408055 (technical-description, vdb-entry)
- vuldb.com/vuln/408055/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-94138 (third-party-advisory)
- vuldb.com/submit/893913 (third-party-advisory)
- uvxbywu62qm.feishu.cn/wiki/UJfEwIEjJijyHskIuxccnHkTnmh (exploit)
Frequently asked questions
- What is CVE-2026-94138?
- CVE-2026-94138 is a medium-severity vulnerability in Chengdu Feiyuxing Technology Feiyu Star Router, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.6/10. Published 2026-09-21.
- How severe is CVE-2026-94138?
- Medium severity. CVSS v3 base score is 6.6 out of 10.