An undocumented port and debug service on TCP/60023 enables an attacker to access without authentication the phone’s configuration/debug shell via telnet.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/43262/ClipcommCPW-100E.txt
Source: https://packetstormsecurity.com/files/43262/ClipcommCPW-100E.txt.html