What is CVE-2021-36989?

CVE-2021-36989 is a critical-severity vulnerability in Huawei Emui, classified under Incorrect Default Permissions. CVSS score: 9.8/10. Published 2021-10-28.

How severe is CVE-2021-36989?

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

Vulnerability in Huawei Emui

CVE-2021-36989

There is a Kernel crash vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may escalate permissions.

Published 2021-10-28 · 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: 0.007 (53.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Huawei Emui — versions 11.0.0, 10.1.1
Huawei Magic Ui — versions 4.0.0, 3.1.1
Huawei Magic Ui — versions 3.1.1, 4.0.0

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

consumer.huawei.com/en/support/bulletin/2021/7/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-36989?: CVE-2021-36989 is a critical-severity vulnerability in Huawei Emui, classified under Incorrect Default Permissions. CVSS score: 9.8/10. Published 2021-10-28.
How severe is CVE-2021-36989?: Critical severity. CVSS v3 base score is 9.8 out of 10.