What is CVE-2021-37100?

CVE-2021-37100 is a high-severity vulnerability in Huawei Harmonyos, classified under Improper Authentication. CVSS score: 7.5/10. Published 2021-12-07.

How severe is CVE-2021-37100?

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

Auth bypass in Huawei Harmonyos

CVE-2021-37100

There is a Improper Authentication vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may lead to account authentication bypassed.

Vulnerability class: Broken Authentication

Published 2021-12-07 · 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: 0.007 (52.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% 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 Harmonyos — versions 2.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

device.harmonyos.com/en/docs/security/update/security-bulletins-202109-00000011… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-37100?: CVE-2021-37100 is a high-severity vulnerability in Huawei Harmonyos, classified under Improper Authentication. CVSS score: 7.5/10. Published 2021-12-07.
How severe is CVE-2021-37100?: High severity. CVSS v3 base score is 7.5 out of 10.