CVE-2021-46840: Huawei Emui

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

The HW_KEYMASTER module has an out-of-bounds access vulnerability in parameter set verification.Successful exploitation of this vulnerability may cause malicious construction of data, which results in out-of-bounds access.

Affected products

• Huawei Emui: version 11.0.1 only; version 12.0.0 only
• Huawei Harmonyos: version 2.0 only

Published 2022-10-14. Last modified 2026-06-17.