What is CVE-2021-22379?

CVE-2021-22379 is a high-severity vulnerability in Huawei Emui, classified under Integer Underflow. CVSS score: 7.5/10. Published 2021-08-02.

How severe is CVE-2021-22379?

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

Integer overflow in Huawei Emui

CVE-2021-22379

There is an Integer Underflow (Wrap or Wraparound) Vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause DoS of Samgr.

Published 2021-08-02 · 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:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.3% 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
Huawei Magic Ui — versions 4.0.0
Huawei Magic Ui — versions 4.0.0

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

consumer.huawei.com/en/support/bulletin/2021/6/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22379?: CVE-2021-22379 is a high-severity vulnerability in Huawei Emui, classified under Integer Underflow. CVSS score: 7.5/10. Published 2021-08-02.
How severe is CVE-2021-22379?: High severity. CVSS v3 base score is 7.5 out of 10.