Microsoft will be releasing 13 bulletins - five rated Critical, seven rated Important, and one rated Moderate - addressing 26 vulnerabilities. Eleven of the bulletins affect Windows and the remaining two affect Office. “This month, we will be giving four of the bulletins a deployment priority rating of 1. In the ANS, those are bulletins 1, 2, 3, and 6. We recommend that customers test and deploy all security updates as soon as possible but you should prioritize these first,” MSRC.
More information about the upcoming security updates can be found on the Advance Notification Service (ANS) webpage.