P30, P30 Pro, Mate 20 smartphones with software of versions earlier than ELLE-AL00B 9.1.0.193(C00E190R2P1), versions earlier than VOGUE-AL00A 9.1.0.193(C00E190R2P1), versions earlier than Hima-AL00B 9.1.0.135(C00E133R2P1) and HiSuite with versions earlier than HiSuite 9.1.0.305 have a version downgrade vulnerability. The device and HiSuite software do not validate the upgrade package sufficiently, so that the system of smartphone can be downgraded to an older version.

P30, Mate 20, P30 Pro smartphones with software of versions earlier than ELLE-AL00B 9.1.0.193(C00E190R1P21), versions earlier than Hima-AL00B 9.1.0.135(C00E200R2P1), versions earlier than VOGUE-AL00A 9.1.0.193(C00E190R1P12) have a buffer overflow vulnerability on several , the system does not properly validate certain length parameter which an application transports to kernel. An attacker tricks the user to install a malicious application, successful exploit could cause malicious code execution.

P30, P30 Pro, Mate 20 smartphones with software of versions earlier than ELLE-AL00B 9.1.0.193(C00E190R2P1), versions earlier than VOGUE-AL00A 9.1.0.193(C00E190R2P1), versions earlier than Hima-AL00B 9.1.0.135(C00E133R2P1) and HiSuite with versions earlier than HiSuite 9.1.0.305 have a version downgrade vulnerability. The device and HiSuite software do not validate the upgrade package sufficiently, so that the system of smartphone can be downgraded to an older version.

There is a Factory Reset Protection (FRP) bypass vulnerability on several smartphones. The system does not sufficiently verify the permission, an attacker could do a certain operation on certain step of setup wizard. Successful exploit could allow the attacker bypass the FRP protection. Affected products: Mate 20 X, versions earlier than Ever-AL00B 9.0.0.200(C00E200R2P1); Mate 20, versions earlier than Hima-AL00B/Hima-TL00B 9.0.0.200(C00E200R2P1); Honor Magic 2, versions earlier than Tony-AL00B/Tony-TL00B 9.0.0.182(C00E180R2P2).