CVE-2026-4228: medium-severity vulnerability in LB-LINK BL-WR9000
LB-LINK BL-WR9000 set_wifi sub_458754 command injection
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 8.9%
exploitation probability
8.9%top 5% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
LB-LINK · BL-WR9000Related CVEs — LB-LINK BL-WR9000
In the same product, most dangerous first.
CVE-2026-4227HIGHLB-LINK BL-WR9000 get_hidessid_cfg sub_44D844 buffer overflowEPSS 1.1%CVE-2026-4226HIGHLB-LINK BL-WR9000 get_virtual_cfg sub_44E8D0 stack-based overflowEPSS 1.1%CVE-2025-7574CRITICALLB-LINK BL-WR9000 Web Interface lighttpd.cgi restore improper authenticationEPSS 0.8%CVE-2025-7573MEDIUMLB-LINK BL-WR9000 lighttpd.cgi bs_GetManPwd information disclosureEPSS 0.4%CVE-2025-7572MEDIUMLB-LINK BL-WR9000 lighttpd.cgi bs_GetHostInfo information disclosureEPSS 0.4%