Windows apps · Application version · June 12, 2026

Microsoft Edge WebView2 Runtime 149.0.4022.69

Microsoft Edge WebView2 Runtime 149.0.4022.69, released June 12, 2026, fixes 10 CVEs in Microsoft Edge WebView2 Runtime. None of them is reported as exploited. Patch Radar priority: High. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every one of these CVEs.

High

Superseded. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every CVE on this page. Install that instead.

CVEs closed
10
None rated Critical
Exploited
0
None reported
Highest CVSS
8.8
Base score, 0 to 10
Highest EPSS
0.0082
57th percentile

Priority of the 10 CVEs

Patch now 0 Urgent 0 High 8 Routine 2

Applies to

ProductVersion
Microsoft Edge WebView2 Runtime149.0.4022.69

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-50521 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability8.3 0.0082 None reported
High CVE-2026-12007 Chromium: CVE-2026-12007 Use after free  Core8.8 0.0029 None reported
High CVE-2026-12008 Chromium: CVE-2026-12008 Use after free  DigitalCredentials8.3 0.0025 None reported
High CVE-2026-12011 Chromium: CVE-2026-12011 Use after free  WebMIDI8.3 0.0025 None reported
High CVE-2026-12016 Chromium: CVE-2026-12016 Insufficient validation of untrusted input  DevTools8.3 0.0023 None reported
High CVE-2026-12012 Chromium: CVE-2026-12012 Use after free  Network8.1 0.0023 None reported
High CVE-2026-12014 Chromium: CVE-2026-12014 Use after free  Cast8.3 0.0017 None reported
High CVE-2026-12018 Chromium: CVE-2026-12018 Inappropriate implementation  Mojo8.8 0.0016 None reported
Routine CVE-2026-12015 Chromium: CVE-2026-12015 Use after free  Autofill5.3 0.0023 None reported
Routine CVE-2026-12017 Chromium: CVE-2026-12017 Insufficient validation of untrusted input  Extensions3.1 0.0021 None reported
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