Huawei HarmonyOS is an operating system from Huawei, a Chinese company. It provides a full-scenario distributed operating system based on a microkernel.Huawei EMUI is a user interface developed by Huawei based on the Android operating system. A security bypass vulnerability exists in Huawei HarmonyOS and EMUI, which can be exploited by an attacker to cause a background application to launch maliciously.