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Microsoft Patch Tuesday, September 2026

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Microsoft's September 2026 security release, published September 8, 2026: 60 updates fixing 1,169 CVEs, ranked by confirmed exploitation, ransomware use, and severity. Provided by Senserva.

60
Updates (KBs)
1,169
CVEs fixed
2
Exploited zero-day
0
On the CISA KEV list
118
Critical, rated by Microsoft

Severity, as Microsoft rates it

Critical 118Important 910Moderate 104Low 14No rating 23

That covers 1,146 of the 1,169; the remaining 23 carry no Severity rating at all.

Zero-days in this release

CVE-2026-81963Windows Update StackCVSS 7.8Exploited
CVE-2026-85880Windows Advanced Local Procedure Call (ALPC)CVSS 7.8Exploited

Actively exploited CVEs (CISA KEV)

None of this month's CVEs were in the CISA Known Exploited Vulnerabilities catalog as of the last refresh.

Other high-risk CVEs (CVSS 8.8+)

CVE-2026-54118Microsoft SQL Server Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-54117Microsoft SQL Server Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-68839Windows USB Mass Storage Class Driver Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69276Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69408Microsoft Windows Media Foundation Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69431Telnet Client Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69463Windows NTFS Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69491Microsoft DirectMusic Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69493Windows Event Logging Service Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69496Windows Compressed Folder Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69525Remote Desktop Services Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-69579Windows Message Queuing Remote Code Execution VulnerabilityCVSS 9.8

Products fixed this month

.NET 10.0 installed on Windows (15).NET 8.0 installed on Windows (15).NET 9.0 installed on Windows (15)Microsoft Office 2019 for 32-bit editions (12)Microsoft Office 2019 for 64-bit editions (12)Microsoft 365 Apps for Enterprise for 32-bit Systems (12)Microsoft SQL Server 2019 for x64-based Systems (GDR) (10)Windows 10 Version 1809 for 32-bit Systems (10)Windows 10 Version 1809 for x64-based Systems (10)Windows Server 2019 (10)

Every update in this release

All 60 update articles, worst first: anything on the CISA KEV list, then by highest CVSS. Each row links our page for the update, Microsoft's support article, and the Update Catalog for a standalone download.

UpdateSeverityMax CVSSCVEs fixedProductsAlso
KB5101347Critical9.85Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5101346Critical9.88Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5122876Critical9.8615Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5122882Critical9.8640Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5122878Critical9.8568Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5122871Critical9.8678Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5124008Critical9.8628Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5122880Critical9.8601Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5124012Critical9.8627Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5123099Critical9.8552Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5123065Critical9.8393Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5123066Critical9.8417Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5002923Critical9.831Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5123301Critical9.810Skype for Business Server 2015 CU13, Skype for Business Server Subscription Edition CU1, Skype for Business Server 2019 CU8Support · Catalog
KB5123287Critical9.810Skype for Business Server 2015 CU13, Skype for Business Server Subscription Edition CU1, Skype for Business Server 2019 CU8Support · Catalog
KB5123300Critical9.810Skype for Business Server 2015 CU13, Skype for Business Server Subscription Edition CU1, Skype for Business Server 2019 CU8Support · Catalog
KB5002916Critical9.818Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5121610Critical9.39Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server Subscription Edition RTMSupport · Catalog
KB5121609Critical9.39Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server Subscription Edition RTMSupport · Catalog
KB5121608Critical9.39Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server Subscription Edition RTMSupport · Catalog
KB5121611Critical9.38Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2016 Cumulative Update 23Support · Catalog
KB5126049High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126047High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126051High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126421High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126048High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126050High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126046High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126043High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126042High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126044High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126045High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126053High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126422High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126052High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5126424High8.82.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5122773High8.852Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5122771High8.852Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5122770High8.856Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5122772High8.852Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5122769High8.856Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5122768High8.852Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (GDR)Support · Catalog
KB5126104High8.85Microsoft Visual Studio 2022 version 17.14, .NET 11.0 installed on Linux, .NET 11.0 installed on Mac OSSupport · Catalog
KB5126105High8.86Microsoft Visual Studio 2022 version 17.14, .NET 11.0 installed on Linux, .NET 11.0 installed on Mac OSSupport · Catalog
KB5126106High8.86Microsoft Visual Studio 2022 version 17.14, .NET 11.0 installed on Linux, .NET 11.0 installed on Mac OSSupport · Catalog
KB5122775High8.845Microsoft SQL Server 2017 for x64-based Systems (GDR), Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2017 for x64-based Systems (CU 31)Support · Catalog
KB5122774High8.845Microsoft SQL Server 2017 for x64-based Systems (GDR), Microsoft SQL Server 2019 for x64-based Systems (GDR), Microsoft SQL Server 2017 for x64-based Systems (CU 31)Support · Catalog
KB5002908High8.816Microsoft SharePoint Server Subscription EditionSupport · Catalog
KB5002912High8.82Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002913High8.82Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002919High8.83Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002920High8.86Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002644High8.82Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5123731High8.81Microsoft Dynamics 365 Customer Engagement V9.1Support · Catalog
KB4011160High8.81Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002914High8.831Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002904High8.830Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office 365 for MacSupport · Catalog
KB5002898High8.82Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5122874High8.81Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
KB5002910High7.84Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit SystemsSupport · Catalog
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Reference: Microsoft CVE and vulnerability management, ranked by real-world risk, and the Microsoft patching guide.
Data notice: this page is provided as is, for informational purposes only, without warranty of any kind. Senserva, LLC does not guarantee the accuracy, completeness, or timeliness of third-party data (MSRC, NVD, CISA KEV, EPSS) and accepts no liability for actions taken based on it; verify against the authoritative Microsoft advisory before acting. Built daily with Senserva Trustworthy AI. All use of this data is subject to the Senserva EULA.