October 2026 Patch Tuesday: 1,413 Flaws, 3 Zero-Days Microsoft’s October 2026 Patch Tuesday, released on October 13, 2026, fixes 1,413 vulnerabilities across Windows, Office, Exchange Server, SharePoint, .NET, Azure services, and developer tools. The total surpasses September’s Patch Tuesday (974 flaws) and sets a new monthly record for the second month in a row, a rise Microsoft has tied to AI-assisted vulnerability discovery.
October 2026 Patch Tuesday: 1,413 Flaws, 3 Zero-Days
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