The ZTE ZXV10 W300 router contains hard-coded credentials that are useable for the telnet service on the device. The username is "admin" and the password is "XXXXairocon" where "XXXX" is the last four characters of the device's MAC address. The MAC address is obtainable over SNMP with community string public.
f4ed8e390aaf0ec726b015355351d5726098fe77192fb55fc5a05886a6f225ce
TVT TD-2308SS-B DVR suffers from a directory traversal vulnerability.
94eb6059ced3cd9b966dd944c4b2f76324a0ad308b70bc89df8dcf4f173a69fb