One developer has found an application that can be exploited to grant a backdoor root access. In a series of tweets, the developer explained how he was able to gain root access and that the app has been pre-installed on all current OnePlus models, as well as on OxygenOS for OnePlus One. The application, called 'EngineerMode' was made by Qualcomm and was intended for factory testing, the Twitter user said. After further investigation, it was found that the application is installed on all OnePlus 3, OnePlus 3T and OnePlus 5 devices, potentially rendering them open to backdoor root access. The user can access manual tests like GPS test, root status test or even the main activity by sending a command.

Source: India Today November 14, 2017 07:09 UTC