Two researchers have found a way to bypass the Activation Lock on both iPhones and iPads, running the two most recent versions of iOS, 10.1.1 and 10.2.1. A security researcher says Apple failed to protect the WiFi network name and password input fields for (WPA2 networks) against long text entries. By entering long strings in these two fields, the researcher says he was able to cause a buffer overflow that freezes the device’s screen. The researcher recorded a video, which he released on YouTube, walking users through the bypass technique.
Source: https://www.bleepingcomputer.com/news/apple/researchers-bypass-apples-activation-lock-on-iphones-and-ipads/