What is CVE-2022-33638?

CVE-2022-33638 is a high-severity vulnerability in Microsoft Edge Chromium. CVSS score: 8.3/10. Published 2022-06-29.

How severe is CVE-2022-33638?

High severity. CVSS v3 base score is 8.3 out of 10.

Vulnerability in Microsoft Edge Chromium

CVE-2022-33638

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Published 2022-06-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.0th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.025 · change: +0.001

Affected products

Microsoft Edge Chromium
Microsoft Edge (Chromium-Based) — versions 1.0.0

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2022-33638 (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2022-33638?: CVE-2022-33638 is a high-severity vulnerability in Microsoft Edge Chromium. CVSS score: 8.3/10. Published 2022-06-29.
How severe is CVE-2022-33638?: High severity. CVSS v3 base score is 8.3 out of 10.