What is CVE-2021-0389?

CVE-2021-0389 is a high-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 7.8/10. Published 2021-03-10.

How severe is CVE-2021-0389?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Google Android

CVE-2021-0389

In setNightModeActivated of UiModeManagerService.java, there is a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-168039904

Vulnerability class: Broken Access Control

Published 2021-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Google Android — versions 11.0
Android — versions Android-11

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

source.android.com/security/bulletin/pixel/2021-03-01 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0389?: CVE-2021-0389 is a high-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 7.8/10. Published 2021-03-10.
How severe is CVE-2021-0389?: High severity. CVSS v3 base score is 7.8 out of 10.