New vulnerability allows you to bypass the lock screen in iOS 6.1.3
The error was discovered by the employees of the Dutch site iPhoneclub.nl. Using the voice dialing feature of iOS, it is possible to gain unauthorized access to contacts, photos on the device, as well as send emails and SMS.
To protect your iPhone, just go to Settings -> General -> Password Protection and disable Voice Dialing. We are waiting for iOS 6.1.4!