Debug information disclosure exists on Peplink Balance 305 380 580 710 1350 and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. A direct request to cgi-bin/HASync/hasync.cgi?debug=1 shows Master LAN Address Serial Number HA Group ID Virtual IP and Submitted syncid.