Authentication flaw

HUAWEI Mate 20 versions Versions earlier than 10.1.0.160C00E160R3P8;HUAWEI Mate 20 Pro versions Versions earlier than 10.1.0.270C431E7R1P5,Versions earlier than 10.1.0.270C635E3R1P5,Versions earlier than 10.1.0.273C636E7R2P4;HUAWEI Mate 20 X versions Versions earlier than...