RCE in Lb-link Bl-wr9000
CVE-2026-4228
A vulnerability was detected in LB-LINK BL-WR9000 2.4.9. This affects the function sub_458754 of the file /goform/set_wifi. The manipulation results in command injection. It is possible to launch the attack remotely. The exploit is now pub…
EPSS: 0.004 (61.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Lb-link Bl-wr9000 — versions 2.4.9
- Lb-link Bl-wr9000_firmware — versions 2.4.9
Weakness classification (CWE)
References
- VDB-351151 | LB-LINK BL-WR9000 set_wifi sub_458754 command injection (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-351151 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #771210 | LB-LINK BL-WR9000 V2.4.9 Command Injection (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-4228?
- CVE-2026-4228 is a medium-severity vulnerability in Lb-link Bl-wr9000, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-16.
- How severe is CVE-2026-4228?
- Medium severity. CVSS v3 base score is 6.3 out of 10.