Microsoft .NET Framework Update
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Update Summary
Cumulative update for Windows and .NET Framework. It includes security fixes for CVE-2026-32177 and CVE-2026-35433, with no additional quality improvements or known issues.
Update Details
Security
- Addresses CVE-2026-32177: elevation of privilege vulnerability.
- Addresses CVE-2026-35433: elevation of privilege vulnerability.
New Features
- For Windows 11, version 26H1 (build 28000) and newer, the update installs the complete
.NET Framework 3.5product as a standalone installer, replacing any previously installed version.
Known Issues
- No known issues are reported for this release.
Hints
- This update is cumulative and includes all previously released quality and reliability improvements.
- The operating system KB is used for update offering; the specific .NET Framework update installed depends on the .NET Framework version already present on the device.
- For Windows 11, version 26H1 and newer,
.NET Framework 3.5is delivered as a full product update rather than a traditional component patch.
Product Information
Vendor: Microsoft
Product: .NET Framework
Product type: Other
Platform: Windows
Vendor information published: May 12, 2026
Original release notes: View on vendor site
Published on updatealert.io: Jun 2, 2026
Description: Developer runtime and framework for building and running Windows applications.