Microsoft will be revising their Security Bulletins Portal in February to use CVEs and other changes as described below: 

https://mcpmag.com/articles/2017/01/17/replacing-security-bulletin-portal-in-february.aspx

https://technet.microsoft.com/en-us/mt791750.aspx

Microsoft will be going live with its new “Security Updates Guide” portal — which will replace the older “Security Bulletins” portal — next month.  The Security Updates Guide is currently accessible as a preview. However, on Jan. 10, 2017, Microsoft will stop publishing the Security Bulletins portal. The Security Bulletin numbering system, using formats like “MS17-00x” to label security bulletin groups, also will be going away next month. Instead of using those bulletin numbers, Microsoft plans to identify its patches using “vulnerability ID numbers and KB [Knowledge Base] Article ID numbers,” the company explained, in a Security Updates Guide FAQ.