What is CVE-2023-28284?

CVE-2023-28284 is a medium-severity vulnerability in Microsoft Edge, classified under Protection Mechanism Failure. CVSS score: 4.3/10. Published 2023-04-11.

How severe is CVE-2023-28284?

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

Vulnerability in Microsoft Edge

CVE-2023-28284

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Published 2023-04-11 · 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: 0.008 (55.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Microsoft Edge
Microsoft Edge — versions 1.0.0

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28284 (vendor-advisory, Patch, Broken Link, Vendor Advisory)

Frequently asked questions

What is CVE-2023-28284?: CVE-2023-28284 is a medium-severity vulnerability in Microsoft Edge, classified under Protection Mechanism Failure. CVSS score: 4.3/10. Published 2023-04-11.
How severe is CVE-2023-28284?: Medium severity. CVSS v3 base score is 4.3 out of 10.