This exploit is for real, the new firmware 2.0.0.7 is not secure at all. The only security you have is that by default it's on port 8080 so there is some security through obscurity; but your router/network isn't safe from others if you have wan access turned on. With just a few clicks you can have full admin access to create new users, find wep keys, ftp data off or launch attacks on other computers on the network..
I'm very disapointed with asus and hope when they release this firmware it has more security than a transparent overlay..