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Microsoft Patch Tuesday, June 2026

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Microsoft's June 2026 security release, published June 9, 2026: 33 updates fixing 156 CVEs, ranked by confirmed exploitation, ransomware use, and severity. Provided by Senserva.

33
Updates (KBs)
156
CVEs fixed
0
On the CISA KEV list
22
Critical updates

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-2026-41089Windows Netlogon Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-41096Windows DNS Client Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-44815DHCP Client Service Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-45657Windows Kernel Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-47291HTTP.sys Remote Code Execution VulnerabilityCVSS 9.8
CVE-2026-42904Windows TCP/IP Elevation of Privilege VulnerabilityCVSS 9.6
CVE-2025-10263ARM: CVE-2025-10263 Completion of affected memory accesses might not be guaranteed by comp...CVSS 9.3
CVE-2026-40402Windows Hyper-V Elevation of Privilege VulnerabilityCVSS 9.3
CVE-2026-45602Windows Dynamic Host Configuration Protocol (DHCP) Tampering VulnerabilityCVSS 9.1
CVE-2026-34329Microsoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityCVSS 8.8
CVE-2026-40403Windows Graphics Component Remote Code Execution VulnerabilityCVSS 8.8
CVE-2026-42985Remote Desktop Client Remote Code Execution VulnerabilityCVSS 8.8

Products fixed this month

Microsoft Office 365 for Mac (7)Windows Server 2025 (Server Core installation) (4)Windows 11 Version 25H2 for ARM64-based Systems (4)Windows 11 Version 25H2 for x64-based Systems (4)Microsoft SharePoint Enterprise Server 2016 (4).NET 10.0 installed on Windows (3).NET 8.0 installed on Windows (3).NET 9.0 installed on Windows (3)Microsoft Office 2019 for 32-bit editions (3)Microsoft SharePoint Server Subscription Edition (3)

Every update in this release

All 18 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
KB5087539Critical9.866Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based SystemsSupport · Catalog
KB5087423Critical9.866Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based SystemsSupport · Catalog
KB5094126Critical9.8107Windows 11 Version 26H1 for ARM64-based Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 22H2 for ARM64-based SystemsSupport · Catalog
KB5093998Critical9.8158Windows 11 Version 26H1 for ARM64-based Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 22H2 for ARM64-based SystemsSupport · Catalog
KB5094128Critical9.8105Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
KB5089549Critical9.861Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based SystemsSupport · Catalog
KB5089466Critical9.861Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based SystemsSupport · Catalog
KB5002881High8.48Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server Subscription Edition, Microsoft Office 365 for MacSupport · Catalog
KB5002876High8.48Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server Subscription Edition, Microsoft Office 365 for MacSupport · Catalog
KB5002878High8.49Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server Subscription Edition, Microsoft Office 365 for MacSupport · Catalog
KB5002879High8.43Microsoft Office 365 for Mac, Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019Support · Catalog
KB5002875High8.27Microsoft Office 365 for Mac, Office Online Server, Microsoft Office 2019 for 32-bit editionsSupport · Catalog
KB5002877High8.27Microsoft Office 365 for Mac, Office Online Server, Microsoft Office 2019 for 32-bit editionsSupport · Catalog
KB5097148High7.83.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5097149High7.83.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5097150High7.83.NET 10.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on WindowsSupport · Catalog
KB5002852High7.81Microsoft Office 365 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editionsSupport · Catalog
KB5094006High7.81Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019Support · Catalog
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Reference: Microsoft CVE and vulnerability management, ranked by real-world risk, and the Microsoft patching guide.
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