2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5088859)

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 for x64 KB5088859...

2026-05 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 for x64 (KB5087065)

2026-05 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 for x64 KB5087065...

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 (KB5088863)

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 KB5088863...

2026-05 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 for ARM64 (KB5088863)

2026-05 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 for ARM64 KB5088863...

2026-05 Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 for x64 (KB5088860)

2026-05 Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 for x64 KB5088860...

May 12, 2026-Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 (KB5087048)

May 12, 2026-Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 KB5087048 Applies to: Microsoft .NET Framework 3.5 Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows...

May 12, 2026-Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 (KB5087062)

May 12, 2026-Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 KB5087062 Applies to: Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2 Important The installation of this Extended...

May 12, 2026-KB5087061 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10, version 1809 and Windows Server 2019

May 12, 2026-KB5087061 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10, version 1809 and Windows Server 2019 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.7.2 The May 12, 2026 update for Windows 10, version 1809 and Windows Server 2019 includes security and...

May 12, 2026-KB5087059 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022

May 12, 2026-KB5087059 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows Server 2022 includes security and cumulative reliability improvements in .NET Framework 3.5 and...

May 12, 2026-KB5087058 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2

May 12, 2026-KB5087058 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows 11, version 23H2 includes security and cumulative reliability improvements in .NET Framework...

May 12, 2026-KB5087055 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

May 12, 2026-KB5087055 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1 Release Date: May 12, 2026 Version: .NET Framework 4.8.1 The May 12, 2026 update for Windows 11, version 26H1 includes security and cumulative reliability improvements in .NET Framework 4.8.1. We...

May 12, 2026-KB5087065 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

May 12, 2026-KB5087065 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016 Release Date: May 12, 2026 Version: .NET Framework 4.8 The May 12, 2026 update for Windows 10, version 1607 and Windows Server 2016 includes security and cumulative reliability...

PT-2026-40133

Name of the Vulnerable Software and Affected Versions .NET affected versions not specified Description A heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally. A heap-based buffer overflow occurs when an application writes more data to a heap-allocated...

May 12, 2026-KB5087077 Cumulative Update for .NET Framework 3.5 for Windows 11, version 26H1 (build 28000) and later

May 12, 2026-KB5087077 Cumulative Update for .NET Framework 3.5 for Windows 11, version 26H1 build 28000 and later Release Date: May 12, 2026 Version: .NET Framework 3.5 The May 12, 2026 update installs the complete .NET Framework 3.5 product for Windows 11, version 26H1 build version 28000 and...

May 12, 2026-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 (KB5088861)

May 12, 2026-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 KB5088861 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2...

May 12, 2026-KB5088864 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server 2019

May 12, 2026-KB5088864 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server 2019 Release Date: May 12, 2026 Version: .NET Framework 3.5, 4.7.2 and 4.8 Summary This article describes the security and cumulative update for 3.5, 4.7.2 and 4.8 for...

BIT-DOTNET-SDK-2026-33116 .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

Loop with unreachable exit condition 'infinite loop' in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network...

PT-2026-38465

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network...

RHEL 9 : .NET 8.0 (RHSA-2026:13693)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13693 advisory. .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR...

dotnet: .NET: Denial of Service via stack overflow

A flaw was found in .NET. A remote attacker could exploit a stack overflow vulnerability during encrypted key nested decryption, leading to a Denial of Service DoS. This could make the affected system unavailable to legitimate users...