Iranian security researcher –Koorosh Ghorbani– have discover hidden backdoor in Huawei Wimax CPE Bm632w as use in many wifi WiMAX routers.

Vulnerability is hidden user with UserLevel = 0 have full ATP Access on Telnet and SSH.

IEDB link is here: http://iedb.ir/exploits-3240.html

More detail is on blog of Koorosh Ghorbani here: http://8thbit.net/blog/