CMMC has officially entered the implementation phase, and it's reshaping how defense contractors, notably subcontractors, approach cybersecurity compliance.
The landscape of cybersecurity compliance is undergoing a major transformation moving into 2026, especially for companies working within the defense sector. The Cybersecurity Maturity Model Certification (CMMC) has officially entered its implementation phase, and it's reshaping how defense contractors, notably subcontractors, approach cybersecurity compliance.
Where CMMC Stands Today
On November 10, 2025, the Department of Defense (DoD) published the final rule integrating CMMC into the Defense Federal Acquisition Regulation Supplement (DFARS), initiating a phased three-year rollout that will gradually apply CMMC requirements to new DoD contracts.
Read more here:
CYBERSECURITY MATURITY MODEL CERTIFICATION Program FREQUENTLY ASKED QUESTIONS
Key elements of the rule include:
- Organizations must comply with specific CMMC levels that correspond to the type and sensitivity of information they access.
- Senior company officials will be required to submit annual affirmations verifying their organization’s compliance.
- CMMC has shifted from a voluntary framework to a mandatory component of defense contracting.
Who’s Adopting CMMC?
Currently, the Department of Defense is the only federal agency formally including CMMC requirements in its contracts. However, other agencies are watching closely, and broader adoption may follow in the coming years.
Prime Contractors Requiring CMMC
Many large defense contractors are now requiring their subcontractors to comply with CMMC standards as part of their cybersecurity posture. This shift ensures that all participants in the supply chain meet the necessary requirements for handling sensitive government information. Depending on the nature of the work and the type of data involved, subcontractors may need to complete self-assessments or obtain third-party certification to demonstrate compliance. Failure to meet these standards could result in disqualification from contract opportunities or other legal and financial risks.
What This Means for Subcontractors
For subcontractors supporting defense programs, the message is clear: CMMC compliance is becoming a prerequisite for participation. Here’s what to focus on:
- Understand your required CMMC level based on the data you handle, whether it’s basic Federal Contract Information (FCI) or more sensitive Controlled Unclassified Information (CUI).
- Evaluate your current cybersecurity practices and identify any gaps that need to be addressed.
- Begin the certification process early, especially if third-party assessment is required.
- Stay informed about updates from both the DoD and your prime contractors, as requirements may evolve during the rollout.
Final Thoughts
CMMC is no longer something to plan for down the road, it’s already reshaping how defense contracts are awarded and managed. For subcontractors, this means taking proactive steps now to understand which level of certification applies, reviewing current cybersecurity practices, and closing any gaps. As prime contractors begin enforcing these standards, being prepared isn’t just smart, it’s essential for staying competitive and eligible in today’s defense marketplace.
Still not sure what your next steps are? Schedule a consultation with Steve Spry, CMMC RP for more information.
