CVE-2026-4228: Lb-Link Bl-WR9000 Firmware

Critical severity, CVSS 9.8. EPSS: 8.9% chance of exploitation in the next 30 days.

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 public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Lb-Link Bl-WR9000 Firmware: version 2.4.9 only

Published 2026-03-16. Last modified 2026-06-17.