It’s not often that a truly critical security vulnerability emerges that hits the maximum Common Vulnerability Scoring System severity rating of 10. This is one of those times.

Microsoft has confirmed multiple vulnerabilities rated as critical and impacting core cloud services, one of which has reached the unwelcome heights of that 10/10 criticality rating. The good news is that none are known to have been exploited in the wild, none have already been publicly disclosed, and as a user, there’s nothing you need to do to protect your environment.