Patch Sonar

Zero-days under active attack, explained in plain English

Patch Tuesday

On the second Tuesday of every month, Microsoft releases security fixes for Windows, Office, Exchange and more. We sort out what's already being exploited and what to install first, in plain English.

The next Patch Tuesday is Nov 10, 2026 (in 5 days). Microsoft usually publishes around 10 a.m. Pacific; this page updates within the hour. November 2026 page →

Latest: October 2026

1408fixed
1exploited
1publicly disclosed
77critical

Read October 2026 →

Every month

MonthFixedExploitedCritical
October 20261408177
September 20269722113
August 2026401144
July 2026571357
June 2026201032
May 2026118016
April 202616328
March 20267803
February 20265462
January 202611218
December 20255712