The CMMC 2026 deadline: what defense contractors still get wrong

For the first few years after CMMC was announced, contractors could reasonably treat it as a future problem. That window is closing. Prime contractors are now flowing CMMC Level 2 requirements down into subcontracts, and contracting officers are asking for SPRS scores and, increasingly, third-party assessment status before award.

Where the timeline actually stands

Two things are true at once: enforcement has been phased in gradually, and the phase-in is no longer several years out. If your contracts touch Controlled Unclassified Information (CUI), assume Level 2 applies to you and that a prime or contracting officer can ask for evidence at any point — not just at recompete.

The five gaps we see most

1. No current System Security Plan (SSP). Plenty of contractors have a POA&M but not an SSP that actually matches their environment as it exists today.
2. CUI scope creep. CUI ends up in email, personal devices, and cloud storage that was never brought into the assessment boundary.
3. Multi-factor authentication gaps on legacy systems. Usually one or two older systems that "everyone knows about" and nobody has fixed.
4. No incident response plan that's been tested. A document exists; nobody has run a tabletop exercise against it.
5. Treating this as an IT project instead of a compliance program. Controls get implemented once and drift within two quarters because there's no ongoing evidence collection.

The contractors who pass on the first attempt are the ones who ran a real gap analysis six to twelve months out — not the ones who scrambled in the final quarter.

What to do in the next 90 days

Start with a control-by-control gap analysis against the 110 NIST 800-171 controls, scored and prioritized — not a checklist you fill out once and file away. From there, build a remediation roadmap with real owners and dates, not just line items. If you don't know whether your current CUI boundary is accurate, that's the first thing to fix, before any control work.

If you want a second set of eyes on where you actually stand, that's the first conversation we have with every new client — no cost, no obligation.