What is CVE-2021-40027?

CVE-2021-40027 is a high-severity vulnerability in Huawei Emui, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2022-01-10.

How severe is CVE-2021-40027?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Huawei Emui

CVE-2021-40027

The bone voice ID TA has a vulnerability in calculating the buffer length,Successful exploitation of this vulnerability may affect data confidentiality.

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

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Huawei Emui — versions 13.0.0, 12.0.1, 12.0.0
Huawei Harmonyos — versions 2.0.0, 2.0.1, 3.1.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-40027?: CVE-2021-40027 is a high-severity vulnerability in Huawei Emui, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2022-01-10.
How severe is CVE-2021-40027?: High severity. CVSS v3 base score is 7.5 out of 10.