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.
| Software | From | Fixed in |
|---|---|---|
| apple / iphone_os | 4.0 | 4.0.x |
| apple / iphone_os | 4.1 | 4.1.x |