What Makes a Critical Vulnerability Critical?

The lack of standards or consistency in the industry makes prioritization difficult for IT. Microsoft's severity ratings are probably on target, but their definitions are obsolete.

Patch Tuesday bulletins announced 11 vulnerabilities: four critical, six important, and one moderate. What do these terms mean? 

You see severity ratings most of the time you see a vulnerability disclosure, but there are no hard standards for severity ratings. In fact some vendors most infamously Apple don't provide any severity ratings for their vulnerabilities. Not that Apple is a big issue for many enterprises, but the absence of severity ratings makes it difficult to prioritize patches.

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