IIRC, these CVEs were discovered and disclosed by Microsoft Vulnerability Research teams.
If you can believe Microsoft, then neither of these CVEs are publicly disclosed nor are they currently being exploited in-the-wild (at the time of publication). See:
I doubt McAfee has DAT protection for these non-publicly disclosed or exploited CVEs (yet).
In order to be alerted if/when McAfee DAT coverage for CVEs is available, then sign-up for McAfee's Support Notification Service (SNS), here: https://www.mcafee.com/enterprise/en-us/sns/preferences/sns-form.html
Otherwise, monitor for the CVE info from McAfee here:
For example, here's a recently populated CVE provided by McAfee with related support info:
Hope this info is helpful.