An issue was discovered on ARRIS TG852G, TG862G, and TG1672G devices. A remote attacker (in proximity to a Wi-Fi network) can derive the default WPA2-PSK value by observing a beacon frame.

ARRIS Touchstone TG862G/CT Telephony Gateway with firmware 7.6.59S.CT and earlier has a default password of password for the admin account, which makes it easier for remote attackers to obtain access via a request to home_loggedout.php.

Cross-site scripting (XSS) vulnerability in ARRIS Touchstone TG862G/CT Telephony Gateway with firmware 7.6.59S.CT and earlier allows remote authenticated users to inject arbitrary web script or HTML via the computer_name parameter to connected_devices_computers_edit.php.

Multiple cross-site request forgery (CSRF) vulnerabilities in ARRIS Touchstone TG862G/CT Telephony Gateway with firmware 7.6.59S.CT and earlier allow remote attackers to hijack the authentication of administrators for requests that (1) enable remote management via a request to remote_management.php, (2) add a port forwarding rule via a request to port_forwarding_add.php, (3) change the wireless network to open via a request to wireless_network_configuration_edit.php, or (4) conduct cross-site scripting (XSS) attacks via the keyword parameter to managed_sites_add_keyword.php.