Buffer overflow in Huawei Emui

CVE-2021-39996

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

Vulnerability class: Buffer Overflow

EPSS: 0.008 (53.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Huawei Emui — versions 10.0.0, 10.1.0, 10.1.1
  • Huawei Harmonyos
  • Huawei Magic_ui — versions 3.0.0, 3.1.0, 3.1.1
  • N/a Emui;magic Ui;harmonyos — versions EMUI 10.0.0,EMUI 10.1.0,EMUI 10.1.1,EMUI 11.0.0,EMUI 11.0.1, Magic UI 3.0.0,Magic UI 3.1.0,Magic UI 3.1.1,Magic UI 4.0.0, HarmonyOS 2.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-39996?
CVE-2021-39996 is a critical-severity vulnerability in Huawei Emui, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-01-10.
How severe is CVE-2021-39996?
Critical severity. CVSS v3 base score is 9.8 out of 10.