This can be exploited to brute force the WPS PIN, and allow recovery of the WPA password in an incredibly short amount of time, as opposed to the standard attack on WPA.

A router with WPS requires a PIN to allow other devices to connect, and this PIN should be unique to every router and not derived from other easily accessible data found on the router. When [Craig ...

On the plus side, your router's mostly secure. Security researcher Stefan Viehbock has just discovered a major security hole which allowed him to use a brute force technique to access a WPS PIN ...