VMware provides comprehensive security hardening guides for its products, these guides covers a lot of points that may make your environment vulnerable.
Security Hardening Guides provide prescriptive guidance for customers on how to deploy and operate VMware products in a secure manner. Guides for vSphere are provided in an easy to consume spreadsheet format, with rich metadata to allow for guideline classification and risk assessment. They also include script examples for enabling security automation. Comparison documents are provided that list changes in guidance in successive versions of the guide.
It contain the name, description, threat, and how-to harden each point.
Direct Download for the guides:
For earlier editions and updates, visit the VMware Security Hardening Guides page.