CVE-2021-40040: Huawei Emui

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Vulnerability of writing data to an arbitrary address in the HW_KEYMASTER module. Successful exploitation of this vulnerability may affect 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 Harmonyos: version 2.0 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 2022-08-10. Last modified 2026-06-17.