What is CVE-2021-40010?

CVE-2021-40010 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-2021-40010?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Huawei Emui

CVE-2021-40010

The bone voice ID TA has a heap overflow vulnerability.Successful exploitation of this vulnerability may result in malicious code execution.

Vulnerability class: Buffer Overflow

Published 2022-01-10 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.012 (67.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Huawei Emui — versions 10.0.0, 10.1.0, 10.1.1
Huawei Harmonyos — versions 2.0
Huawei Magic Ui — versions 3.0.0, 3.1.0, 3.1.1
Harmonyos;emui;magic Ui — versions HarmonyOS 2.0, EMUI 12.0.0,EMUI 11.0.1,EMUI 11.0.0,EMUI 10.1.1,EMUI 10.1.0,EMUI 10.0.0, Magic UI 4.0.0,Magic UI 3.1.1,Magic UI 3.1.0,Magic UI 3.0.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

consumer.huawei.com/en/support/bulletin/2022/5/ (Vendor Advisory)
device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202201-0… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-40010?: CVE-2021-40010 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-2021-40010?: Critical severity. CVSS v3 base score is 9.8 out of 10.