CVE-2021-39996: Huawei Emui

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.

Affected products

• Huawei Emui: version 10.0.0 only; version 10.1.0 only; version 10.1.1 only; version 11.0.0 only; version 11.0.1 only
• Huawei Harmonyos: before 2.0 (fixed in 2.0)
• 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.