What is CVE-2020-0366?

CVE-2020-0366 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 2020-09-17.

How severe is CVE-2020-0366?

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

Vulnerability in Google Android

CVE-2020-0366

In PackageInstaller, there is a possible permissions bypass due to a tapjacking vulnerability. This could lead to local escalation of privilege using an app set as the default Assist app with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-138443815

Published 2020-09-17 · 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 (32.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · 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/android-11 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-0366?: CVE-2020-0366 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 2020-09-17.
How severe is CVE-2020-0366?: High severity. CVSS v3 base score is 7.8 out of 10.