Harmonic NSG 9000 devices have a default password of nsgadmin for the admin account, a default password of nsgguest for the guest account, and a default password of nsgconfig for the config account.

Harmonic NSG 9000 devices allow remote authenticated users to conduct directory traversal attacks, as demonstrated by "POST /PY/EMULATION_GET_FILE" or "POST /PY/EMULATION_EXPORT" with FileName=../../../passwd in the POST data.