HUAWEI Mate 20 smartphones versions earlier than 9.1.0.139(C00E133R3P1) have an improper authentication vulnerability. The system has a logic error under certain scenario, successful exploit could allow the attacker who gains the privilege of guest user to access to the host user’s desktop in an instant, without unlocking the screen lock of the host user.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1787
Reference (s):
- https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200108-02-smartphone-en