Windows apps · Application version · October 5, 2026

Microsoft Edge WebView2 Runtime 154.0.4258.62

Microsoft Edge WebView2 Runtime 154.0.4258.62, released October 5, 2026, fixes 13 CVEs in Microsoft Edge WebView2 Runtime. One of them is being exploited (CVE-2026-96951); 1 on CISA KEV. Patch Radar priority: Patch now. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every one of these CVEs.

Patch now1 on CISA KEV

Superseded.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
13
3 rated Critical
Exploited
1
CVE-2026-96951
Highest CVSS
9.6
Base score, 0 to 10
Highest EPSS
0.0981
95th percentile

Priority of the 13 CVEs

Patch now 1 Urgent 3 High 7 Routine 2

Applies to

ProductVersion
Microsoft Edge WebView2 Runtime154.0.4258.62

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Patch now CVE-2026-96951 Windows Shell Security Feature Bypass Vulnerability8.8 0.0981 KEVExploited
Urgent CVE-2026-103628 Chromium CVE-2026-103628: Out of bounds write9.6 0.0038 None reported
Urgent CVE-2026-103626 Chromium CVE-2026-103626: Incorrect authorization9.6 0.0033 None reported
Urgent CVE-2026-103630 Chromium CVE-2026-103630: Use after free9.6 0.0033 None reported
High CVE-2026-88077 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability8.8 0.0063 Exploitation Less Likely
High CVE-2026-103631 Chromium CVE-2026-103631: Buffer overflow8.8 0.0046 None reported
High CVE-2026-103625 Chromium CVE-2026-103625: Type confusion8.8 0.0032 None reported
High CVE-2026-103622 Chromium CVE-2026-103622: Use after free8.8 0.0031 None reported
High CVE-2026-103623 Chromium CVE-2026-103623: Use after free8.8 0.0030 None reported
High CVE-2026-103624 Chromium CVE-2026-103624: Use after free8.3 0.0028 None reported
High CVE-2026-103629 Chromium CVE-2026-103629: Integer overflow9.6 0.0020 None reported
Routine CVE-2026-103627 Chromium CVE-2026-103627: Information leak6.5 0.0025 None reported
Routine CVE-2026-103621 Chromium CVE-2026-103621: Integer overflow4.3 0.0020 None reported
Showing 1 to 13 of 13 1

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.