CVE-2025-4076 | LB-LINK BL-AC3600 up to 1.0.22 Password /cgi-bin/lighttpd.cgi easy_uci_set_option_string_0 routepwd command injection

A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function easy_uci_set_option_string_0 of the file /cgi-bin/lighttpd.cgi of the component Password Handler. The manipulation of the argument routepwd leads to command injection.

This vulnerability is uniquely identified as CVE-2025-4076. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

The vendor was contacted early about this disclosure but did not respond in any way.