Today is the second Tuesday of the month, and Microsoft is right on schedule with 59 security fixes, nine of which are considered Critical in severity.

None of the vulnerablities were previously known or exploited, and 49 are ranked Important and one as Moderate.

The latest release affects Windows, Internet Explorer, Edge, ChakraCore, Microsoft Office and Office Services and Web Apps, Microsoft Dynamics 365, SQL Server Management Studio, Windows Update Assistant, and Open Source Software. It’s a smaller-volume roundup compared with many Patch Tuesdays of late: September’s fixed 80 bugs and August’s patched 93, including a wormable remote code execution (RCE) flaw. In July, Microsoft addressed 77 vulnerabilities.