Windows apps · Application version · May 21, 2026

Microsoft Edge WebView2 Runtime 148.0.3967.83

Microsoft Edge WebView2 Runtime 148.0.3967.83, released May 21, 2026, fixes 13 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Superseded.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

None rated Critical

Exploited

None reported

Highest CVSS

8.8

Base score, 0 to 10

Highest EPSS

0.0080

56th percentile

Priority of the 13 CVEs

Patch now 0
                                Urgent 0
                                High 8
                                Routine 5

Applies to

Product	Version
Microsoft Edge WebView2 Runtime	148.0.3967.83

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-9111	Chromium: CVE-2026-9111 Use after free in WebRTC	8.8	0.0080	None reported
High	CVE-2026-9119	Chromium: CVE-2026-9119 Heap buffer overflow in WebRTC	8.8	0.0054	None reported
High	CVE-2026-9120	Chromium: CVE-2026-9120 Use after free in WebRTC	8.8	0.0050	None reported
High	CVE-2026-9112	Chromium: CVE-2026-9112 Use after free in GPU	8.8	0.0040	None reported
High	CVE-2026-9118	Chromium: CVE-2026-9118 Use after free in XR	8.8	0.0040	None reported
High	CVE-2026-9126	Chromium: CVE-2026-9124 Insufficient validation of untrusted input in Input	8.8	0.0040	None reported
High	CVE-2026-9114	Chromium: CVE-2026-9114 Use after free in QUIC	8.8	0.0037	None reported
High	CVE-2026-9121	Chromium: CVE-2026-9126 Use after free in DOM	8.8	0.0033	None reported
Routine	CVE-2026-9110	Chromium: CVE-2026-9110 Inappropriate implementation in UI	4.2	0.0034	None reported
Routine	CVE-2026-9124	Chromium: CVE-2026-9123 Heap buffer overflow in Chromecast	5.3	0.0026	None reported
Routine	CVE-2026-9115	Chromium: CVE-2026-9115 Insufficient policy enforcement in Service Worker	4.3	0.0022	None reported
Routine	CVE-2026-9113	Chromium: CVE-2026-9113 Out of bounds read in GPU	4.3	0.0022	None reported
Routine	CVE-2026-9116	Chromium: CVE-2026-9116 Insufficient policy enforcement in ServiceWorker	4.3	0.0022	None reported

Other Microsoft Edge WebView2 Runtime versions with security fixes

Microsoft Edge WebView2 Runtime 156.0.4314.58
Microsoft Edge WebView2 Runtime
Microsoft Edge WebView2 Runtime 156.0.4314.56
Microsoft Edge WebView2 Runtime
Microsoft Edge WebView2 Runtime 156.0.4314.50
Microsoft Edge WebView2 Runtime
Microsoft Edge WebView2 Runtime 156.0.4314.42
Microsoft Edge WebView2 Runtime
Microsoft Edge WebView2 Runtime 155.0.4283.62
Microsoft Edge WebView2 Runtime
Microsoft Edge WebView2 Runtime 155.0.4283.60
Microsoft Edge WebView2 Runtime

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