What is CVE-2023-36026?

CVE-2023-36026 is a medium-severity vulnerability in Microsoft Edge Chromium. CVSS score: 4.3/10. Published 2023-11-16.

How severe is CVE-2023-36026?

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

Vulnerability in Microsoft Edge Chromium

CVE-2023-36026

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Published 2023-11-16 · 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 (55.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.0% 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 Chromium
Microsoft Edge (Chromium-Based) — versions 1.0.0
Microsoft Edge (Chromium-Based) Extended Stable — versions 1.0.0

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36026 (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-36026?: CVE-2023-36026 is a medium-severity vulnerability in Microsoft Edge Chromium. CVSS score: 4.3/10. Published 2023-11-16.
How severe is CVE-2023-36026?: Medium severity. CVSS v3 base score is 4.3 out of 10.