RCE in Chengdu Feiyuxing Technology Feiyu Star Router
CVE-2026-94139
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.012 (67.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Chengdu Feiyuxing Technology Feiyu Star Router — versions B-MB5E202-210322-r11656
Weakness classification (CWE)
References
- vuldb.com/vuln/408056 (technical-description, vdb-entry)
- vuldb.com/vuln/408056/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-94139 (third-party-advisory)
- vuldb.com/submit/893914 (third-party-advisory)
- uvxbywu62qm.feishu.cn/wiki/ZvaTwad1viClSYkBYtFcnG7Knve (exploit)
Frequently asked questions
- What is CVE-2026-94139?
- CVE-2026-94139 is a high-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: 7.4/10. Published 2026-09-21.
- How severe is CVE-2026-94139?
- High severity. CVSS v3 base score is 7.4 out of 10.