A security researcher has discovered four vulnerabilities that affect all OnePlus handsets, including One, X, 2, 3 and 3T, running the latest versions of OxygenOS 4.1.3 (worldwide) and below, as well as HydrogenOS 3.0 and below (for Chinese users).
There is a bad news for all OnePlus lovers.
https://community.oneplus.com/thread/534321