AD CS Certificate Template Deployment Checklist
Overview
Step-by-step checklist for creating, configuring, publishing, and securing AD CS certificate templates. Covers permissions, EKU settings, ESC vulnerability prevention, and auto-enrollment setup.
Table of Contents
- Template Creation Prerequisites
- Security Permissions Configuration
- Extended Key Usage Settings
- ESC Vulnerability Prevention
- Auto-Enrollment Configuration
- Publishing and Validation
- Post-Deployment Verification
Overview
AD CS certificate templates are deceptively simple to create but remarkably easy to misconfigure. A single overly permissive template can expose your entire domain to privilege escalation attacks — ESC1 through ESC8 vulnerabilities are actively exploited in the wild, and most stem from template misconfigurations that went unreviewed after deployment.
This checklist walks you through every decision point when creating and publishing AD CS certificate templates. Each item includes the specific setting, where to find it in the Certificate Templates Console or PowerShell, and the security implications of getting it wrong. Whether you’re deploying a new user authentication template or locking down an existing web server template, this checklist ensures nothing slips through.
Built from real-world AD CS hardening engagements across enterprises running 50 to 5,000+ templates.
What’s Included
- Pre-deployment security review steps for template permissions and enrollment rights
- EKU configuration guidance to prevent certificate misuse across authentication scenarios
- ESC1–ESC8 vulnerability prevention checks with specific registry and template settings
- Auto-enrollment GPO configuration and testing procedures
- PowerShell commands for bulk template auditing and permission verification
- Rollback procedures if a template change breaks existing enrollments