Assess Yourself: How to Kickstart a CMMC Self-Assessment and Risk Review

Introduction
Many defense contractors want to prepare for CMMC but struggle with a simple question: Where do we start? The most effective starting point is an internal readiness check centered on two core activities: a CMMC-aligned self-assessment and a cybersecurity risk review. These steps help organizations understand their current security posture, identify gaps, and build a clear remediation roadmap.

This guide offers a practical, non-technical walkthrough of how to conduct that first internal review. It highlights key tools, explains how to use the DoD’s official NIST SP 800 171 assessment methodology, and outlines when it makes sense to bring in outside help. The goal is to help teams establish clarity and momentum before engaging auditors.

Step 1: Define the Scope of Your Environment

Before assessing controls, you must understand where CUI lives in your environment.

Start with:

• Systems that store, process, or transmit CUI
• Networks that connect to those systems
• Users with access to CUI
• Third parties or subcontractors that touch CUI
• Cloud services or software platforms involved in workflows

Document everything. Scope mistakes are the most common cause of audit issues. A smaller, well-defined scope is easier to protect and assess.

Step 2: Gather Policies, Procedures, and Evidence

Before scoring your environment, collect the documents that demonstrate how your organization manages security. This will help you compare written processes with real-world behavior.

Gather items such as:

• Security policies (access control, passwords, incident response, configuration management)
• System Security Plan (SSP)
• Network diagrams and asset lists
• Logs and monitoring reports
• User access lists
• Training records
• Vendor and subcontractor agreements

If your documentation is outdated, inconsistent, or missing, capture this as part of your gap list.

Step 3: Use the DoD Assessment Guide to Score Yourself

The Department of Defense provides an official method for assessing compliance with NIST SP 800 171. The guide explains how to interpret each requirement and determine if it is fully, partially, or not yet implemented.

Scoring involves:

• Reviewing each of the 110 controls
• Determining whether each control is implemented
• Assigning point deductions based on gaps
• Calculating an overall SPRS score

Your score must be submitted to the Supplier Performance Risk System (SPRS) if you are subject to DFARS 252.204 7019.

Step 4: Compare Policies to Actual Practices

Policy compliance is one of the most overlooked parts of a self-assessment. Written policies must match what your IT and security teams actually do.

Practical review steps:

• Interview IT staff about how accounts are created and removed
• Review how patches and updates are applied
• Confirm that logs are retained and reviewed
• Check training requirements against real participation records
• Validate whether remote access tools match policy

If policy and practice do not align, the requirement is not fully implemented.

Step 5: Identify Technical and Documentation Gaps

As you review controls, track gaps in two categories:

• Technical gaps: missing tools or configurations (such as MFA, encryption, or log management)
• Documentation gaps: policies, procedures, or evidence not updated or maintained

Both types of gaps affect readiness. Documenting them clearly will shape your remediation plan.

Step 6: Build a Remediation Plan and Timeline

A simple remediation plan includes:

• Each unmet requirement
• Required actions
• Responsible owners
• Estimated effort and cost
• A realistic timeline

Organize tasks by priority. Controls tied to access control, logging, and incident response often require early attention.

Step 7: Decide When to Bring in Expert Support

While many organizations can begin a self-assessment internally, outside help becomes valuable when:

• You need an external review to validate your score
• Documentation is incomplete or outdated
• You need help interpreting NIST requirements
• You are preparing for a CMMC Level 2 assessment

Engaging a third party is not a requirement, but it helps reduce blind spots and improves confidence ahead of formal reviews.

Why a Self-Assessment Provides a Competitive Advantage

Companies that assess themselves early benefit from:

• A clear understanding of their security posture
• A roadmap to guide investment decisions
• Reduced stress during CMMC assessments
• Better preparation for DFARS and NIST compliance

Most importantly, a readiness assessment helps build a culture of continuous security improvement.

Conclusion

A CMMC self-assessment is not about passing or failing. It is about gaining insight, understanding risk, and building a practical plan for reaching compliance. By scoping your environment correctly, reviewing documentation, scoring yourself against NIST 800 171, and building a structured remediation plan, you create a clear path toward certification.

Organizations that take this initiative early reduce uncertainty, strengthen cybersecurity maturity, and protect their eligibility for future DoD contracts.