Contractor Liability for CMMC Self-Assessment Errors
There's a question that almost nobody in the CMMC space is asking out loud, and it's the one that matters most: what happens when a self-assessment turns out to be wrong?
Not fraudulently wrong. Not intentionally wrong. Just wrong.
Level 1 compliance is self-attestation. There is no auditor who visits your facility, reviews your systems, and tells you whether you pass. You review yourself. You sign. You submit. And that signature carries the full weight of a federal certification.
The assumption most contractors are operating under is that self-attestation is the easy path. No audit means no risk. But the legal structure underneath says something different.
When a contractor signs a self-assessment affirming compliance, that affirmation becomes part of the contract record. If at any point the federal government determines that the affirmation was inaccurate, even if the contractor genuinely believed they were compliant, the question shifts from cybersecurity to federal procurement law. The clauses you agreed to aren't abstract policy. They are contract terms incorporated by reference into active agreements. And you probably never read them the way a prosecutor would.
The enforcement mechanism that sits underneath all of this is not a cybersecurity regulation. It's the False Claims Act. And the False Claims Act does not require intent to defraud. It requires a "reckless disregard" for accuracy. The federal government built a dedicated initiative specifically to pursue these cases against contractors. The question is not whether you meant to lie. The question is whether you checked carefully enough before you signed.
Most contractors we've spoken to cannot describe what each of the 15 practices actually requires at an implementation level. They rely on their IT provider or their consultant to tell them they're compliant. But the signature on the self-assessment doesn't belong to the consultant. It belongs to the contractor.
This is the gap that hasn't been widely discussed. The person who bears the legal liability is rarely the person who verified the technical accuracy. And in most cases, the technical verification itself has significant problems.
We're not aware of any public enforcement actions specifically under CMMC self-assessment liability yet. But the legal framework is already in place. The precedent exists in other federal self-certification contexts. The only question is timing.
Several contractor groups have started comparing their actual compliance status against what they originally submitted. The results have been concerning enough that some of them have gone quiet about what they found.