A vulnerability in OPTILINK OP-XT71000N Hardware Version: V2.2, Firmware Version: OP_V3.3.1-191028 allows an unauthenticated, remote attacker to conduct a cross site request forgery (CSRF) attack to enable syslog mode through ' /mgm_log_cfg.asp.' The system starts to log events, 'Remote' mode or 'Both' mode on "Syslog -- Configuration page" logs events and sends to remote syslog server IP and Port.