The Thecus NAS server N8800 with firmware 5.03.01 allows remote attackers to execute arbitrary commands via a get_userid action with shell metacharacters in the username parameter.
The ADS/NT Support page on the Thecus NAS server N8800 with firmware 5.03.01 allows remote attackers to discover the administrator credentials by reading this page's cleartext content.
The Thecus NAS server N8800 with firmware 5.03.01 uses cleartext credentials for administrative authentication, which allows remote attackers to obtain sensitive information by sniffing the network.