What is CVE-2026-21223?

CVE-2026-21223 is a security advisory published by Microsoft Security Response Center (MSRC). Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Which CVE IDs does CVE-2026-21223 cover?

CVE-2026-21223 covers the following CVE IDs: CVE-2026-21223. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-21223?

CVE-2026-21223 has a CVSS v3 base score of 7.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-21223?

CVE-2026-21223 affects 1 product, including: Microsoft Edge (Chromium-based).

CVE-2026-21223CVSS 7.1

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-21223 →

📋 Description

Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.

🎯 Affected products1

Microsoft Edge (Chromium-based)

✅ Remediation

KBRelease Notes (Security Update) — fixed build 144.0.3719.82

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223
referencehttps://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security