CVE-2026-21223

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

CVE-2026-21223 is fixed in 4 products on 1 platform, first by Microsoft Edge 144.0.3719.82, released January 16, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.1

No vendor severity

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0027

19th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Microsoft Edge	144.0.3719.82	Microsoft Edge 144.0.3719.82	Jan 16, 2026
Microsoft Edge Beta	151.0.4129.59	Microsoft Edge Beta 151.0.4129.59	Jul 31, 2026
Microsoft Edge Dev	152.0.4167.0	Microsoft Edge Dev 152.0.4167.0	Jul 20, 2026
Microsoft Edge WebView2 Runtime	144.0.3719.82	Microsoft Edge WebView2 Runtime 144.0.3719.82	Jan 16, 2026

Details

Published
January 16, 2026
Weakness
Improper Privilege Management
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223

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