CVE-2026-4227: high-severity vulnerability in LB-LINK BL-WR9000
LB-LINK BL-WR9000 get_hidessid_cfg sub_44D844 buffer overflow
Published
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 1.1%
exploitation probability
1.1%top 35% of all CVEs
observed exploitation
nono source reports it
A security vulnerability has been detected in LB-LINK BL-WR9000 2.4.9. The impacted element is the function sub_44D844 of the file /goform/get_hidessid_cfg. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly 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:H/VI:H/VA:H/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-2026-4228MEDIUMLB-LINK BL-WR9000 set_wifi sub_458754 command injectionEPSS 8.9%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%