Microsoft .NET Framework Update Version 5101002

July 2026 cumulative update for .NET Framework addresses multiple security vulnerabilities, including CVE-2026-47302, CVE-2026-50649, and CVE-2026-56158. It also fixes HttpWebRequest hangs in secure connection scenarios and a Visual Studio x86 debugger floating-point display issue.

• Addresses multiple .NET Framework denial of service vulnerabilities: CVE-2026-47302, CVE-2026-50304, CVE-2026-50324, CVE-2026-50355, CVE-2026-50368, CVE-2026-50411, CVE-2026-50525, CVE-2026-50527, CVE-2026-50647, CVE-2026-50648, CVE-2026-50652, CVE-2026-50653.
• Addresses .NET Framework security feature bypass vulnerability CVE-2026-47304.
• Addresses .NET Framework elevation of privilege vulnerabilities CVE-2026-50646 and CVE-2026-50650.
• Addresses .NET Framework remote code execution vulnerabilities CVE-2026-50649 and CVE-2026-56158.
• Addresses .NET Framework tampering vulnerability CVE-2026-50659.

• Fixes an issue where synchronous HttpWebRequest connections could hang in specific secure connection scenarios with certain server configurations.
• Fixes an issue in the Visual Studio x86 native debugger where certain floating-point values could be reported incorrectly during step operations in mixed-code applications.

• For Windows 11 version 26H1 and newer, the update installs the complete .NET Framework 3.5 product as a standalone installer and replaces any previously installed version.
• The operating system KB is used for update offering; the specific .NET Framework version update installed depends on the version already present on the device.

Product Information

Vendor: Microsoft

Product: .NET Framework

Product type: Other

Platform: Windows

Version: 5101002

Vendor information published: Jul 14, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jul 16, 2026

Description: Developer runtime and framework for building and running Windows applications.