Vulnerability Note VU#950576
DSL routers, including the ASUS DSL-N12E, DIGICOM DG-5524T, Observa Telecom RTA01N, Philippine Long Distance Telephone (PLDT) SpeedSurf 504AN, and ZTE ZXV10 W300 contain hard-coded credentials that are useable in the telnet service on the device.
In the ASUS, DIGICOM, Observa Telecom, and ZTE devices, the username is "admin," in the PLDT device, the user name is "adminpldt," and in all affected devices, the password is "XXXXairocon" where "XXXX" is the last four characters of the device's MAC address. The MAC address may be obtainable over SNMP with community string public.