Race condition in Apple iOS 4.0 through 4.1 for iPhone 3G and later allows physically proximate attackers to bypass the passcode lock by making a call from the Emergency Call screen, then quickly pressing the Sleep/Wake button.

Race condition in Apple iOS 4.0 through 4.1 for iPhone 3G and later allows physically proximate attackers to bypass the passcode lock by making a call from the Emergency Call screen, then quickly pressing the Sleep/Wake button.

Race condition in Apple iOS 4.0 through 4.1 for iPhone 3G and later allows physically proximate attackers to bypass the passcode lock by making a call from the Emergency Call screen, then quickly pressing the Sleep/Wake button. Apple iPhone is prone to a security-bypass vulnerability due to a failure to restrict access to locked devices. An attacker with physical access to a locked device can exploit this issue to bypass the passcode and make calls to numbers in the address book. The following iOS are vulnerable: iOS version 4.2 beta iOS version 4.1 iOS version 4.0