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Security Advisory - Lock-screen Bypass Vulnerability in Huawei Smartphones

  • SA No:huawei-sa-20181105-01-smartphone
  • Initial Release Date: Nov 05, 2018
  • Last Release Date: Nov 05, 2018

There is a lock-screen bypass vulnerability in radio module of some Huawei smartphones. An unauthenticated attacker could start third-part input method APP through certain operations to bypass lock-screen by exploit this vulnerability. (Vulnerability ID: HWPSIRT-2018-04055)
This vulnerability has been assigned a CVE ID: CVE-2018-7925.
Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20181105-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

Emily-AL00A

The versions before 8.1.0.171(C00)

8.1.0.171(C00)



Successful exploit could allow an attacker to start third-part input method APP without screen lock password.

The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 3.5 (AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
Temporal Score: 3.3 (E:F/RL:O/RC:C)
Overall Score: 3.3

This vulnerability can be exploited only when the following conditions are present:
Attacker gets the smart phone.
Vulnerability details:
There is a lock-screen bypass vulnerability in radio module of some Huawei smartphones. An unauthenticated attacker could start third-part input method APP through certain operations to bypass lock-screen by exploit this vulnerability.

The product that supports automatic update will receive a system update prompt. You can install the update to fix the vulnerability.

This vulnerability was discovered by Huawei internal tester.

2018-11-05 V1.0 INITIAL


Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

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