October 16, 2025
October 2025 Microsoft Patch Tuesday
October 2025 Microsoft Patch Tuesday updates are now published in the KACE Patch Catalog. These include 84 security updates targeting various Microsoft product families and platforms supported by KACE. These patches target 155 reported vulnerabilities.
This is a list of security updates published in the Patch Catalog for this month:
| Severity | KB | Update |
|---|---|---|
| critical | KB5002341 | Security Update for Microsoft Office 2016 (KB5002341) 64-Bit Edition |
| critical | KB5002792 | Security Update for Microsoft Office 2016 (KB5002792) 64-Bit Edition |
| critical | KB5002341 | Security Update for Microsoft Office 2016 (KB5002341) 32-Bit Edition |
| critical | KB5002792 | Security Update for Microsoft Office 2016 (KB5002792) 32-Bit Edition |
| critical | KB5002797 | Security Update for Microsoft Office Online Server (KB5002797) farm-deployment |
| critical | KB5066837 | 2025-10 Cumulative Update for Windows 10 Version 1507 for x64-based Systems (KB5066837) |
| critical | KB5066587 | 2025-10 Servicing Stack Update for Windows 10 Version 1507 for x64-based Systems (KB5066587) |
| critical | KB5066837 | 2025-10 Cumulative Update for Windows 10 Version 1507 for x86-based Systems (KB5066837) |
| critical | KB5066587 | 2025-10 Servicing Stack Update for Windows 10 Version 1507 for x86-based Systems (KB5066587) |
| critical | KB5066836 | 2025-10 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5066836) |
| critical | KB5066584 | 2025-10 Servicing Stack Update for Windows 10 Version 1607 for x64-based Systems (KB5066584) |
| critical | KB5066836 | 2025-10 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5066836) |
| critical | KB5066584 | 2025-10 Servicing Stack Update for Windows 10 Version 1607 for x86-based Systems (KB5066584) |
| critical | KB5066586 | 2025-10 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5066586) |
| critical | KB5066586 | 2025-10 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5066586) |
| critical | KB5066791 | 2025-10 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5066791) |
| critical | KB5066791 | 2025-10 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5066791) |
| critical | KB5066791 | 2025-10 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5066791) |
| critical | KB5066791 | 2025-10 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5066791) |
| critical | KB5066133 | 2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 for x64 (KB5066133) |
| critical | KB5066793 | 2025-10 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5066793) |
| critical | KB5066133 | 2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 for x64 (KB5066133) |
| critical | KB5066793 | 2025-10 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems (KB5066793) |
| critical | KB5066131 | 2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 (KB5066131) |
| critical | KB5066835 | 2025-10 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5066835) (26100.6899) |
| critical | KB5066128 | 2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for x64 (KB5066128) |
| critical | KB5066835 | 2025-10 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5066835) (26200.6899) |
| critical | KB5066873 | 2025-10 Security Monthly Quality Rollup (ESU) for Windows Server 2012 R2 for x64-based Systems (KB5066873) |
| critical | KB5066794 | 2025-10 Servicing Stack Update for Windows Server 2012 R2 for x64-based Systems (KB5066794) |
| critical | KB5066875 | 2025-10 Security Monthly Quality Rollup (ESU) for Windows Server 2012 for x64-based Systems (KB5066875) |
| critical | KB5066795 | 2025-10 Servicing Stack Update for Windows Server 2012 for x64-based Systems (KB5066795) |
| critical | KB5066836 | 2025-10 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5066836) |
| critical | KB5066584 | 2025-10 Servicing Stack Update for Windows Server 2016 for x64-based Systems (KB5066584) |
| critical | KB5066586 | 2025-10 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5066586) |
| critical | KB5066782 | 2025-10 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5066782) |
| critical | KB5066131 | 2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 24H2 for x64 (KB5066131) |
| critical | KB5066835 | 2025-10 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5066835) (26100.6899) |
| important | KB5066369 | Security Update For Exchange Server 2016 CU23 (KB5066369) |
| important | KB5066368 | Security Update For Exchange Server 2019 CU14 (KB5066368) |
| important | KB5066367 | Security Update For Exchange Server 2019 CU15 (KB5066367) |
| important | KB5066366 | Security Update For Exchange Server Subscription Edition (KB5066366) |
| important | KB5068331 | 2025-10 .NET 8.0.21 Security Update for x64 Client (KB5068331) |
| important | KB5068331 | 2025-10 .NET 8.0.21 Security Update for x86 Client (KB5068331) |
| important | KB5068331 | 2025-10 .NET 8.0.21 Security Update for x64 Server (KB5068331) |
| important | KB5068332 | 2025-10 .NET 9.0.10 Security Update for x64 Client (KB5068332) |
| important | KB5068332 | 2025-10 .NET 9.0.10 Security Update for x86 Client (KB5068332) |
| important | KB5068332 | 2025-10 .NET 9.0.10 Security Update for x64 Server (KB5068332) |
| important | KB5002787 | Security Update for Microsoft SharePoint Enterprise Server 2016 (KB5002787) farm-deployment |
| important | KB5002788 | Security Update for Microsoft SharePoint Enterprise Server 2016 (KB5002788) farm-deployment |
| important | KB5002720 | Security Update for Microsoft Access 2016 (KB5002720) 64-Bit Edition |
| important | KB5002794 | Security Update for Microsoft Excel 2016 (KB5002794) 64-Bit Edition |
| important | KB5002719 | Security Update for Microsoft Office 2016 (KB5002719) 64-Bit Edition |
| important | KB5002757 | Security Update for Microsoft Office 2016 (KB5002757) 64-Bit Edition |
| important | KB5002790 | Security Update for Microsoft PowerPoint 2016 (KB5002790) 64-Bit Edition |
| important | KB5002789 | Security Update for Microsoft Word 2016 (KB5002789) 64-Bit Edition |
| important | KB5002720 | Security Update for Microsoft Access 2016 (KB5002720) 32-Bit Edition |
| important | KB5002794 | Security Update for Microsoft Excel 2016 (KB5002794) 32-Bit Edition |
| important | KB5002719 | Security Update for Microsoft Office 2016 (KB5002719) 32-Bit Edition |
| important | KB5002757 | Security Update for Microsoft Office 2016 (KB5002757) 32-Bit Edition |
| important | KB5002790 | Security Update for Microsoft PowerPoint 2016 (KB5002790) 32-Bit Edition |
| important | KB5002789 | Security Update for Microsoft Word 2016 (KB5002789) 32-Bit Edition |
| important | KB5002796 | Security Update for Microsoft SharePoint Server 2019 Core (KB5002796) farm-deployment |
| important | KB5002798 | Security Update for Microsoft SharePoint Server 2019 Language Pack (KB5002798) farm-deployment |
| important | KB5002786 | Security Update for Microsoft SharePoint Server Subscription Edition (KB5002786) farm-deployment |
| important | KB4576341 | Visual Studio 2017 version 15.9.77 update |
| important | KB4576339 | Visual Studio 2019 version 16.11.52 update |
| important | KB5007364 | Visual Studio 2022 version 17.10.20 update |
| important | KB5007364 | Visual Studio 2022 version 17.12.13 update |
| important | KB5007364 | Visual Studio 2022 version 17.14.17 update |
| important | KB5066136 | 2025-10 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1607 for x64 (KB5066136) |
| important | KB5066136 | 2025-10 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1607 (KB5066136) |
| important | KB5066738 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 for x64 (KB5066738) |
| important | KB5066738 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 (KB5066738) |
| important | KB5066746 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5066746) |
| important | KB5066746 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 (KB5066746) |
| important | KB5066747 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 for x64 (KB5066747) |
| important | KB5066747 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 (KB5066747) |
| important | KB5066741 | 2025-10 Security and Quality Rollup (ESU) for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 for x64 (KB5066741) |
| important | KB5066740 | 2025-10 Security and Quality Rollup (ESU) for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 for x64 (KB5066740) |
| important | KB5066136 | 2025-10 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 for x64 (KB5066136) |
| important | KB5066738 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows Server 2019 for x64 (KB5066738) |
| important | KB5066743 | 2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5066743) |
| moderate | KB5066840 | 2025-10 Cumulative Security Update (ESU) for Internet Explorer 11 for Windows Server 2012 R2 for x64-based systems (KB5066840) |
| moderate | KB5066840 | 2025-10 Cumulative Security Update (ESU) for Internet Explorer 11 for Windows Server 2012 for x64-based systems (KB5066840) |