https://thenextweb.com/security/2019/10/04/google-xiaomi-and-huawei-devices-affected-by-zero-day-flaw-that-unlocks-root-access/

Researchers at Google’s security group Project Zero have found an active vulnerability in Android that affects several popular devices including the Pixel 2, Huawei P20 Pro, and Xiaomi Redmi Note 5.

A post from the security group suggests it found the bug last week, and attackers were exploiting it at that moment. The post notes the exploit requires no or minimal customization to root a phone that’s exposed to the bug.