What is CVE-2021-0386?

CVE-2021-0386 is a high-severity vulnerability in Google Android, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 7.8/10. Published 2021-03-10.

How severe is CVE-2021-0386?

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

Vulnerability in Google Android

CVE-2021-0386

In onCreate of UsbConfirmActivity, there is a possible tapjacking vector due to an insecure default value. This could lead to local escalation of privilege with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-173421110

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:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Google Android — versions 11.0
Android — versions Android-11

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

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

Frequently asked questions

What is CVE-2021-0386?: CVE-2021-0386 is a high-severity vulnerability in Google Android, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 7.8/10. Published 2021-03-10.
How severe is CVE-2021-0386?: High severity. CVSS v3 base score is 7.8 out of 10.