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title: Microsoft Patches 999 Vulnerabilities in Major Security U...
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### Microsoft Patches 999 Vulnerabilities in Major Security Update

TechPowerUp News • September 10, 2026 at 11:47 AM ET

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In September, Microsoft released fixes for **999 vulnerabilities**, marking one of the largest patch batches in company history. The update addressed **723** flaws in Windows alone, alongside **111** fixes for Office and Office 2016, **62** for SQL Server, and **25** for third-party projects. Two high-severity Windows vulnerabilities, **CVE-2026-81963** and **CVE-2026-85880**, were actively exploited for local privilege escalation and unauthorized code execution; both have now been patched.

Microsoft is expanding its memory integrity protection across Windows 11, with rollout starting in October. This feature uses **Virtualization-based Security (VBS)** to isolate the kernel via hardware virtualization, assuming the kernel may already be compromised. It enables security hotpatches without requiring a restart, allowing critical systems to stay operational during updates. The company will continue stress-testing Windows kernel security, viewing this patch wave as a key step forward.

[Read original article](https://www.techpowerup.com/352561/microsoft-fixes-nearly-1-000-vulnerabilities-across-windows-office-and-azure)

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