For most defense contractors, CMMC preparation has meant fixing controls, tightening CUI boundaries, and getting documentation in shape. But now that CMMC requirements are officially entering contracts, a new risk is overshadowing all that work: their access to a CMMC assessor.
Even organizations that feel ready are discovering that assessor scarcity is what threatens their contract eligibility. If you can’t get on an assessor’s schedule, readiness alone won’t keep you competitive.
Key Takeaways
- Limited CMMC assessor availability is now a direct threat to contract eligibility and revenue for OSCs
- C3PAO and CMMC assessor capacity is already constrained, with waitlists stretching 6–12 months and assessment throughput far below demand.
- Being “ready” without a booked CMMC assessor may still exclude you from bidding, even with strong controls and documentation.
Table of Contents
The Biggest Threat to Contract Eligibility Today
As a company that works every day with Defense Industrial Base (DIB) organizations preparing for CMMC Level 2, we’ve seen contractors put enormous time and resources into closing technical gaps, building documentation, and tightening their CUI boundaries. For most of 2024–2025, readiness felt like the main hill to climb.
However, once the DFARS rule became effective on November 10, 2025 – starting the phased rollout of CMMC requirements in contracts – something else became clear:
The largest threat to contract eligibility isn’t a missing a control; it’s the inability to get a CMMC assessor.
At ISC2 Security Congress, cybersecurity leaders warned that the scarcity of Certified CMMC Assessors (CCAs) now represents a supply chain and national security risk. And from what we’re seeing in the field, they’re right.
Why it’s Difficult to Get on an Assessor's Schedule
According to the CMMC Assessment Process (CAP), a Level 2 assessment typically includes a lead Certified CMMC Assessor (CCA) and a QA (who must be a CCA and cannot be a member of the assessment team).
However, there are only about 550–560 CCAs worldwide. Each of them must complete a Tier 3 federal background check, which takes 6–8 months on average.
That means only a couple of hundred assessments can occur simultaneously, at best. So, there’s no surprise that C3PAO waitlists are already over a year.
And the bottleneck is even more pronounced now than after the CMMC rule became effective:
There are fewer than 100 authorized C3PAOs (with many more applying, but only authorized firms can conduct official assessments).
Multiple industry accounts have warned that C3PAO waitlists can stretch beyond a year, making scheduling – not control implementation – the gating factor for many contractors.
The ecosystem is averaging about one assessment per C3PAO per month (far below what’s needed to meet demand).
Some summaries of DoD planning figures cite 80,000+ contractors needing Level 2 or Level 3 certification (numbers that would strain the current assessment ecosystem even under ideal conditions).
We are officially amidst a structural capacity crisis. So, the last thing you’ll want to do is finally get a CMMC Level 2 assessment and not meet the requirements necessary.
Where Organizations Are Struggling with CMMC Level 2
The most common “Not Met” items organizations are seeing include:
- MFA gaps
- Misconfigured/insufficient CUI encryption
- Failure to restrict nonessential functionality
- Missing/incomplete role-based training
- Weak protection for digital and physical CUI
These failures have less to do with technical know-how and more to do with organizational maturity. If you don’t meet these items, you shouldn’t blame your IT department.
CMMC requires HR, contracts, leadership, finance, and IT all working in alignment. Without that, even strong technical environments can stumble.
Why External Readiness Support Matters More Than Ever
According to a Forbes article, organizations that “conduct mock assessments and engage external readiness support achieve a 93.8% first-attempt pass rate.”
Successful organizations do four things consistently:
- Engage all functions (HR, executives, IT, etc.).
- Embed CMMC into enterprise risk management.
- Document your environment thoroughly (network diagrams, asset inventories, data-flow maps, CUI scoping).
- Conduct an early NIST 800‑171 gap analysis (months before trying to schedule an official review).
From our perspective as an MSP supporting OSCs, this last point is critical. A structured NIST 800-171 gap analysis gives you a remediation roadmap as well as documentation, traceability, and objective evidence for assessors.
You Can Lose Eligibility Even if You’re “Ready”
With CMMC requirements now appearing in new DoD solicitations under DFARS 252.204‑7021, readiness alone doesn’t secure contract eligibility.
You need a booked assessor.
Industry analysts have been blunt, warning that:
- “Assessment capacity is already a constraint.”
- “Waiting to schedule assessments is a competitive risk.”
- “Readiness without a booked assessor may not be enough.”
Contractors who delay may have perfect documentation and rock‑solid controls, but no way to prove it in time to bid.
The Current Timeline
November 10, 2025 – CMMC requirements began appearing in new DOD solicitations (self-assessment phase).
November 10, 2026 – Phase 2 begins. Third-party C3PAO assessments become mandatory for contract awards.
Prep time needed: 6-12 months on average for CMMC Level 2.
If you’re reading this in March 2026 and haven’t started, you’re likely cutting it close for Phase 2 contracts.
Book Early, Prepare Thoroughly, Reduce Risk
With CMMC now active, the biggest risk for defense contractors is not getting an assessment in time to meet their needs.
Our role as a CMMC-focused managed IT services and consulting partner is to help OSCs get ahead of that curve by:
- Educating
- Tightening environments
- Producing evidence
- Strengthening governance
- Removing friction from the assessment process
The organizations that make the right moves now will secure their place in line. However, those who wait may lose access to the very contracts that drive their business growth.
