Microsoft March 2026 Patch Fixes 79 Vulnerabilities, Eight Critical, Two Publicly Disclosed Zero-Days

Summary

Microsoft's March 2026 Patch Tuesday addresses 79 security vulnerabilities including two publicly disclosed zero-days (SQL Server privilege escalation and .NET denial of service) and eight critical flaws. Two Office remote code execution bugs exploitable via the preview pane and an Excel information disclosure vulnerability that could enable data exfiltration through Microsoft Copilot.

Take Action:

This month prioritize SQL server and .Net for the publicly disclosed flaws, then Microsoft Office and Windows for the critical and most probable for exploitation. Then go through the rest of the products.

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This article was originally published on BeyondMachines