CVE-2026-18685 GL.iNet GL-MT3000 modem.so glc set_upgrade command injection

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Impacted is the function setupgrade of the file /cgi-bin/glc of the component modem.so. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly...