Windows apps · Application version · July 23, 2026

Microsoft Edge WebView2 Runtime 150.0.4078.96

Microsoft Edge WebView2 Runtime 150.0.4078.96, released July 23, 2026, fixes 9 CVEs in Microsoft Edge WebView2 Runtime. None of them is reported as exploited. Patch Radar priority: Urgent. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every one of these CVEs.

Urgent

Superseded.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
9
1 rated Critical
Exploited
0
None reported
Highest CVSS
9.6
Base score, 0 to 10
Highest EPSS
0.0057
47th percentile

Priority of the 9 CVEs

Patch now 0 Urgent 1 High 7 Routine 1

Applies to

ProductVersion
Microsoft Edge WebView2 Runtime150.0.4078.96

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Urgent CVE-2026-16416 Chromium: CVE-2026-16416 Integer overflow in Chromecast9.3 0.0013 None reported
High CVE-2026-16420 Chromium: CVE-2026-16420 Type Confusion in WebAudio8.8 0.0057 None reported
High CVE-2026-16421 Chromium: CVE-2026-16421 Inappropriate implementation in WebAudio8.8 0.0052 None reported
High CVE-2026-16418 Chromium: CVE-2026-16418 Stack buffer overflow in V88.8 0.0045 None reported
High CVE-2026-16423 Chromium: CVE-2026-16423 Use after free in UI8.8 0.0035 None reported
High CVE-2026-16413 Chromium: CVE-2026-16413 Out of bounds write in ANGLE9.6 0.0027 None reported
High CVE-2026-16417 Chromium: CVE-2026-16417 Uninitialized Use in Skia9.6 0.0024 None reported
High CVE-2026-16414 Chromium: CVE-2026-16414 Insufficient validation of untrusted input in Chromecast7.8 0.0012 None reported
Routine CVE-2026-16415 Chromium: CVE-2026-16415 Insufficient validation of untrusted input in Extensions5.4 0.0026 None reported
Showing 1 to 9 of 9 1

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