Microsoft fixes 1,000+ flaws, including Outlook zero-day

Microsoft released its November 2026 Patch security updates on 10 November, addressing 1.094 vulnerabilities across its software portfolio, including an Outlook zero-day that had already been exploited in the wild.

The scale of the update follows October’s exceptionally large release, which addressed more than 1.400 vulnerabilities. Although November’s total is lower, it represents a second consecutive month in which Microsoft has issued more than 1.000 fixes. Published totals vary between security trackers because of differences in scope and counting methodology, particularly in the treatment of Microsoft Edge vulnerabilities and updates released earlier in the month. The figures nevertheless illustrate the continuing pressure on organisations to identify, prioritise and deploy security updates across…