Security hardening for ESXi and vCenter Server

Products

• VMware vSphere ESXi

Issue/Introduction

• Security hardening for the VCF-Broadcom Division is managed by the Professional Services / PSO team.
• Please contact the PSO team to validate requirements and implement security hardening measures. 

Environment

VMware vCenter Server 

VMware vSphere ESXi

Resolution

Follow the below documentation for instructions on hardening vSphere ESXi or VMware vCenter Server 8.x
Remediate vSphere 8.0 U3

This covers :

1. Remediating ESXi product controls
2. Remediating vCenter
3. Remediating vCenter (Appliance Controls)

Review the Support for Security Technical Implementation Guides (STIGs) to understand the boundaries of technical support regarding hardening.

 

For issues related to the Support Portal, Licensing, or Contracts : 
Create a Non Technical case for Support Portal / License / Contract related issues

Additional Information

Please refer below VMware vSphere Security Configuration Guide 8 :
VMware vSphere Security Configuration Guide 8

ESXi Certifications :

• EAL4: ESXi 8.0g holds an EAL4 certification (as of February 25, 2026).
• NIAP: ESXi 8.0 Update 3e is NIAP certified under the Protection Profile for Virtualization (as of June 03, 2025).