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Microsoft May 2026 Patch Tuesday (120 flaws)

Security Patch Release
First reported
Last updated
Happening score
H score 22
1 unique sources, 1 articles

Summary

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Microsoft released its May 2026 Patch Tuesday updates, fixing 120 flaws and disclosing no zero-days. The bundle includes 17 Critical vulnerabilities, with multiple remote code execution issues across Microsoft Office, Word, Excel, Windows GDI, SharePoint Server, and Windows DNS Client. Several of the Office flaws can be triggered by opening malicious files, including via the preview pane, making prompt patching important for exposed users and administrators.

Related Happenings

Microsoft MDASH enters limited private preview for AI-driven vulnerability discovery at scale

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About this happening: Microsoft's **MDASH** has entered **limited private preview**, adding a new **AI-driven vulnerability discovery** service that can validate and prove exploitable defects at scale....

Microsoft Windows 365 Office installation disruption

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About this happening: The **Windows 365** service update has introduced a **configuration change** that is blocking **Office downloads and installs** for some customers, disrupting access on cloud PCs....

Microsoft May 2026 Patch Tuesday release

Security Patch Release
First: 13.05.2026 13:36 Last: 13.05.2026 13:36 Sources 1

About this happening: Microsoft's **May 13, 2026 Patch Tuesday** release fixed **138 vulnerabilities** across its product portfolio, including **Windows**, **Azure**, and **Edge**. None of the flaws we...

Microsoft security patch release for CVE-2026-41089

Security Patch Release
First: 13.05.2026 00:46 Last: 13.05.2026 00:46 Sources 1

About this happening: **Microsoft** and other major software vendors shipped a heavy **May 2026** patch cycle, with fixes spanning **Windows**, **iOS**, **Firefox**, **Oracle** products, and **Chrome**...

Microsoft Windows 11 mandatory Patch Tuesday updates (KB5089549, KB5087420)

Security Patch Release
First: 12.05.2026 21:09 Last: 12.05.2026 21:09 Sources 1

About this happening: Microsoft released **mandatory Windows 11 cumulative updates** for **KB5089549** and **KB5087420**, delivering the **May 2026 Patch Tuesday** fixes for **120 vulnerabilities** acr...

Timeline

  1. 12.05.2026 21:08 2 articles · 15d ago

    Microsoft May 2026 Patch Tuesday release

    Initial Disclosure

    Microsoft released May 2026 Patch Tuesday security updates for 120 flaws, with no disclosed zero-days and 17 Critical vulnerabilities. The updates include remote code execution issues in Microsoft Office, Word, and Excel, plus CVE-2026-35421 in Windows GDI, CVE-2026-40365 in Microsoft SharePoint Server, and CVE-2026-41096 in Windows DNS Client.

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