What is CVE-2020-16033?

CVE-2020-16033 is a medium-severity vulnerability in Google Chrome, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 4.3/10. Published 2021-01-08.

How severe is CVE-2020-16033?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Google Chrome

CVE-2020-16033

Inappropriate implementation in WebUSB in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to spoof security UI via a crafted HTML page.

Published 2021-01-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.6% 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

Google Chrome — versions unspecified

Weakness classification (CWE)

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

References

chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_17.html (Release Notes, Vendor Advisory)
crbug.com/1143057 (Permissions Required, Vendor Advisory)

Frequently asked questions

What is CVE-2020-16033?: CVE-2020-16033 is a medium-severity vulnerability in Google Chrome, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 4.3/10. Published 2021-01-08.
How severe is CVE-2020-16033?: Medium severity. CVSS v3 base score is 4.3 out of 10.