CVE-2021-40020: Huawei Emui

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

There is an Out-of-bounds array read vulnerability in the security storage module in smartphones. Successful exploitation of this vulnerability may affect service confidentiality.

Affected products

• Huawei Emui: version 10.0.0 only; version 10.1.0 only; version 10.1.1 only; version 11.0.0 only
• Huawei Magic UI: version 3.0.0 only; version 3.1.0 only; version 3.1.1 only; version 4.0.0 only

Published 2022-01-10. Last modified 2026-06-17.