There is an improper authorization vulnerability in some Huawei smartphones. An attacker could perform a series of operation in specific mode to exploit this vulnerability. Successful exploit could allow the attacker to bypass app lock. (Vulnerability ID: HWPSIRT-2019-12144) This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-9081.

Huawei smartphones HONOR 20 PRO Versions earlier than 10.1.0.230(C432E9R5P1),Versions earlier than 10.1.0.231(C10E3R3P2),Versions earlier than 10.1.0.231(C185E3R5P1),Versions earlier than 10.1.0.231(C636E3R3P1);Versions earlier than 10.1.0.212(C432E10R3P4),Versions earlier than 10.1.0.213(C636E3R4P3),Versions earlier than 10.1.0.214(C10E5R4P3),Versions earlier than 10.1.0.214(C185E3R3P3);Versions earlier than 10.1.0.212(C00E210R5P1);Versions earlier than 10.1.0.160(C00E160R2P11);Versions earlier than 10.1.0.160(C00E160R2P11);Versions earlier than 10.1.0.160(C01E160R2P11);Versions earlier than 10.1.0.160(C00E160R2P11);Versions earlier than 10.1.0.160(C00E160R8P12);Versions earlier than 10.1.0.230(C432E9R5P1),Versions earlier than 10.1.0.231(C10E3R3P2),Versions earlier than 10.1.0.231(C636E3R3P1);Versions earlier than 10.1.0.225(C431E3R1P2),Versions earlier than 10.1.0.225(C432E3R1P2) contain an information vulnerability. A module has a design error that is lack of control of input. Attackers can exploit this vulnerability to obtain some information. This can lead to information leak.

There is a denial of service vulnerability in some Huawei smartphones. Due to the improper processing of received abnormal messages, remote attackers may exploit this vulnerability to cause a denial of service (DoS) on the specific module.

Blutooth BR/EDR specification does not specify sufficient encryption key length and allows an attacker to influence key length negotiation

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and does not prevent an attacker from influencing the key length negotiation. This allows practical brute-force attacks (aka "KNOB") that can decrypt traffic and inject arbitrary ciphertext without the victim noticing.

Some Huawei smart phones have a null pointer dereference vulnerability. An attacker crafts specific packets and sends to the affected product to exploit this vulnerability. Successful exploitation may cause the affected phone to be abnormal.