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Windows Server 2022 update dialog showing security patch KB5094128

ResolvedWindows Server 2022 Standard

Microsoft Ships KB5094128 for Windows Server 2022, Patching Four Critical Flaws

Microsoft's June 2026 security update KB5094128 patches multiple critical vulnerabilities in Windows Server 2022, including an unauthenticated NFS remote code execution flaw (CVE-2026-26001, CVSS 9.8), a Task Scheduler privilege escalation bug, an AD CS authentication bypass, and a Windows kernel memory corruption issue. The update raises the OS build to 20348.5256 and requires a restart.

Jun 9, 20265 min read

Windows Update screen showing a .NET Framework cumulative update ready to install

Resolved.NET Framework 3.5

Microsoft Ships KB5087054 .NET Framework Update for Windows 11 24H2, Patching Two CVEs

Microsoft released KB5087054, a cumulative security update for .NET Framework 3.5 and 4.8.1 on Windows 11 Version 24H2 (x64). The update patches an elevation-of-privilege flaw in the CLR (CVE-2026-0234) and an ASP.NET request-validation bypass (CVE-2026-0235), alongside garbage-collector and reliability fixes. It requires a restart and carries several known post-install issues admins should test for.

May 13, 20265 min read

Windows Server 2025 update screen showing security patch installation

ResolvedWindows Server 2025 Standard

Microsoft Ships KB5087539 Security Update for Windows Server 2025

Microsoft released KB5087539 on May 12, 2026, a security update for Windows Server 2025 that patches remote code execution, privilege escalation and information disclosure flaws across the kernel, Active Directory Domain Services and Remote Desktop Services. The update raises the OS build to 26100.32860 and applies to Standard and Datacenter editions in both Desktop Experience and Server Core.

May 13, 20265 min read

Microsoft update KB5093447, which patches a critical CVSS 9.8 BinaryFormatter remote code execution vulnerability in .NET 8.0.

Resolved.NET 8.0 Runtime

Microsoft Patches CVSS 9.8 BinaryFormatter RCE in .NET 8.0 with KB5093447

Microsoft released KB5093447 on May 12, 2026, a security update for .NET 8.0 patching CVE-2026-26918 (BinaryFormatter RCE, CVSS 9.8), CVE-2026-26919 (ASP.NET Core DoS), and CVE-2026-26920 (info disclosure) across all platforms.

May 13, 20264 min read

Microsoft update KB5089900, which patches a critical SQL Server 2022 Analysis Services remote code execution flaw and a.

ResolvedSQL Server 2022 (all editions)

Microsoft Patches SQL Server 2022 Analysis Services RCE and Database Engine Escalation in KB5089900

Microsoft released KB5089900 on May 12, 2026, a security update for SQL Server 2022 CU24 patching CVE-2026-0234 (privilege escalation), CVE-2026-0235 (SSAS RCE), CVE-2026-0236 (SSRS info disclosure), and CVE-2026-0237 (DoS).

May 13, 20264 min read

Windows Update screen showing KB5087538 security update installing

ResolvedWindows 10 Version 1809

Microsoft Ships KB5087538 May 2026 Security Update for Windows 10 1809 and Server 2019

Microsoft released KB5087538 on May 12, 2026 as the Patch Tuesday security update for Windows 10 Version 1809 and Windows Server 2019, raising the OS build to 17763.8755 and fixing privilege-escalation, remote code execution, information-disclosure, denial-of-service and authentication-bypass flaws across kernel drivers, networking, graphics and TCP/IP components.

May 13, 20264 min read

Windows 11 update settings screen showing a security update ready to install without restart

ResolvedWindows 11 Version 24H2

Microsoft Ships KB5089466 Hotpatch for Windows 11 24H2 and 25H2

Microsoft released KB5089466, a restart-free security hotpatch for Windows 11 versions 24H2 and 25H2, on May 12, 2026. The update addresses multiple high-severity vulnerabilities across the Windows kernel, networking stack, authentication, drivers and services, raising builds to 26100.8390 and 26200.8390.

May 12, 20264 min read

Windows 11 update history showing KB5089549 successfully installed

ResolvedWindows 11 Version 24H2

Microsoft Ships KB5089549 May 2026 Update Fixing Three Windows 11 CVEs

Microsoft released KB5089549 on May 12, 2026, a cumulative security update for Windows 11 24H2 and 25H2 that patches three vulnerabilities — a kernel elevation of privilege, a DirectX graphics memory corruption, and a networking authentication bypass — while raising builds to 26100.8457 and 26200.8457.

May 12, 20264 min read

Microsoft’s May 2026 Patch Tuesday update KB5087537.

ResolvedWindows 10 Version 1607

Microsoft May 2026 Patch Tuesday: KB5087537 Fixes RDP RCE and Kernel Flaws in Windows 10 1607 and Server 2016

Microsoft released KB5087537 on May 12, 2026, a security update for Windows 10 1607 and Windows Server 2016 addressing kernel EoP, RDP RCE, GDI flaws, MSMQ RCE, and Print Spooler vulnerabilities. Build 14393.9140.

May 12, 20264 min read

Microsoft emergency update KB5091573, which patches actively exploited Windows 10 version 1809 vulnerabilities involving.

ResolvedWindows 10 Version 1809

Microsoft Patches Actively Exploited Windows 10 1809 Flaws in Emergency Update KB5091573

Microsoft released KB5091573 on April 19, 2026, an out-of-band security update for Windows 10 Version 1809 patching CVE-2026-28301 through CVE-2026-28304. The vulnerabilities have been actively exploited in the wild.

Apr 20, 20264 min read

ResolvedWindows 10 Version 1607

Microsoft Releases Emergency Patch KB5091572 for Critical Windows 10 1607 Vulnerabilities

Microsoft released KB5091572, an out-of-band security update for Windows 10 Version 1607 and Windows Server 2016, patching CVE-2026-0847 through CVE-2026-0850 and updating systems to Build 14393.9062.

Apr 19, 20264 min read

Resolved.NET 8.0 Runtime

Microsoft Patches Critical .NET 8.0 JSON Deserialization RCE in KB5086096

Microsoft released KB5086096 on April 16, 2026, a critical security update for .NET 8.0 runtime and SDK patching CVE-2026-0145, CVE-2026-0146, and CVE-2026-0147 on Windows, Linux, and macOS.

Apr 17, 20263 min read

Microsoft update KB5083769 for Windows 11 25H2, addressing kernel, WebView2, and Print Spooler vulnerabilities.

ResolvedWindows 11 Version 25H2

Microsoft Ships KB5083769 for Windows 11 25H2, Patching Kernel, WebView2 and Print Spooler Flaws

Microsoft released KB5083769 on April 14, 2026, a critical security update for Windows 11 version 25H2 and 24H2 that addresses six CVEs across the Windows Kernel, Edge WebView2, Graphics Component, Common Log File System and Print Spooler. The update moves systems to build 26200.8246 (25H2) or 26100.8246 (24H2).

Apr 15, 20265 min read

Windows Server 2022 update screen showing a cumulative security update installing

ResolvedWindows Server 2022 Standard

Microsoft Ships KB5082142 April 2026 Security Update for Windows Server 2022

Microsoft released KB5082142 on April 14, 2026, a critical security update for Windows Server 2022 that patches remote code execution, privilege escalation, information disclosure, and denial-of-service vulnerabilities. The cumulative update raises the OS build to 20348.5020 and requires a restart.

Apr 15, 20264 min read

Microsoft update KB5082420, which patches a .NET Framework CLR privilege escalation flaw and ASP.NET denial-of-service.

Resolved.NET Framework 3.5 (Windows 11 24H2)

Microsoft Patches .NET Framework CLR Privilege Escalation and ASP.NET Crashes in KB5082420

Microsoft released KB5082420 on April 14, 2026, a cumulative update for .NET Framework 3.5 and 4.8.1 on Windows 11 24H2 patching CVE-2026-0847 (CLR EoP), ASP.NET memory corruption, WCF failures, and ARM64 compatibility issues.

Apr 15, 20264 min read

Microsoft’s April 2026 Patch Tuesday update KB5082063.

ResolvedWindows 11 Version 24H2

Microsoft April 2026 Patch Tuesday: KB5082063 Patches TCP/IP RCE and Hyper-V Escape in Windows 11 24H2 and Server 2025

Microsoft released KB5082063 on April 14, 2026, a security update for Windows 11 24H2 and Windows Server 2025 patching 6 CVEs including kernel EoP, TCP/IP RCE, Hyper-V escape, and auth token manipulation.

Apr 15, 20264 min read

Windows Update history showing KB5082198 installed and OS build 14393.9060

ResolvedWindows 10 Version 1607

Microsoft Ships KB5082198 for Windows Server 2016 and Windows 10 1607, Fixing Four Critical Flaws

Microsoft's April 2026 Patch Tuesday update KB5082198 raises Windows 10 Version 1607 and Windows Server 2016 to build 14393.9060, addressing kernel remote code execution, LSA privilege escalation, networking information disclosure, file system denial of service, and a Windows Defender Application Control bypass.

Apr 14, 20265 min read

Microsoft out-of-band update KB5086672, which fixes an Insider Preview installation failure.

ResolvedWindows 11 version 24H2

Microsoft Ships Out-of-Band Update KB5086672 to Fix Windows 11 Preview Install Failure

Microsoft released out-of-band cumulative update KB5086672 for Windows 11 versions 25H2 and 24H2 on March 31, 2026, fixing an installation failure (error 0x80073712) that blocked the pulled March 2026 non-security preview update KB5079391. The OOB update raises builds to 26200.8117 and 26100.8117.

Apr 1, 20265 min read