Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
CVE-2026-96196
Summary
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Products covered
.NET 8.0 installed on Windows
.NET 9.0 installed on Windows
Microsoft Visual Studio 2026 version 18.8
Microsoft Visual Studio 2022 version 17.14
Remediation
Install KB5122104. Install KB5122105.
Vendor-listed fixes
8.0.30
9.0.19
18.8.3
17.14.38
CVEs in this advisory 1
Update history
What changed in later vendor updates
SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.
- The vendor changed the advisory's last-updated date.
- The vendor changed its remediation guidance.
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Confirmed at the source
Our collector saw this advisory during a later source check.