Exposure of Sensitive Information to an Unauthorized Actor
The Home screen component in Apple iOS before 5 does not properly support a certain application-switching gesture, which might allow physically proximate attackers to obtain sensitive state information by watching the device's screen.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.