The Carlo Gavazzi EOS-Box stores hard-coded passwords in the PHP file of the device. By using the hard-coded passwords, attackers can log into the device with administrative privileges. This could allow the attacker to have unauthorized access.
https://www.cisa.gov/news-events/ics-advisories/icsa-12-354-02
http://www.us-cert.gov/control_systems/pdf/ICSA-12-354-02.pdf