Windows apps · Application version · August 14, 2026

Microsoft Edge WebView2 Runtime 151.0.4129.86

Microsoft Edge WebView2 Runtime 151.0.4129.86, released August 14, 2026, fixes 5 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Superseded.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
5
None rated Critical
Exploited
0
None reported
Highest CVSS
8.8
Base score, 0 to 10
Highest EPSS
0.0073
54th percentile

Priority of the 5 CVEs

Patch now 0 Urgent 0 High 5 Routine 0

Applies to

ProductVersion
Microsoft Edge WebView2 Runtime151.0.4129.86

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-72970 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability8.3 0.0073 Exploitation Less Likely
High CVE-2026-19556 Chromium: CVE-2026-19556 Use after free in V88.8 0.0041 None reported
High CVE-2026-19559 Chromium: CVE-2026-19559 Use after free in HTML8.8 0.0041 None reported
High CVE-2026-19560 Chromium: CVE-2026-19560 Use after free in Blink8.8 0.0041 None reported
High CVE-2026-19558 Chromium: CVE-2026-19558 Use after free in Extensions7.5 0.0027 None reported
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