FIPS 140 "Validated" vs "Compliant" for CMMC

A FIPS-validated cryptographic module is a hardware or software encryption component that has been independently tested by a NIST-approved laboratory and issued a CMVP certificate number under FIPS 140-2 or FIPS 140-3. If you've spent any time preparing for a CMMC assessment under DFARS 252.204-7012, you've come across the phrase "FIPS compliant" on a vendor's datasheet. It sounds official. It might even appear next to a padlock icon and some copy about military-grade encryption.

Control 3.13.11 is the number one reason companies fail CMMC assessments, according to audits by the Defense Industrial Base Cybersecurity Assessment Center (DIBCAC). Here's what the distinction actually means — and how to get it right.

What does FIPS validated mean for CMMC?

A FIPS-validated cryptographic module is a hardware or software encryption component that has been independently tested by a NIST-approved laboratory and issued a CMVP certificate number under FIPS 140-2 or FIPS 140-3. The operative word is module — not algorithm, not product. The module is the specific implementation that executes the encryption. Under 32 CFR Part 170, CMMC Level 2 requires contractors handling CUI to satisfy all 110 practices in NIST SP 800-171, and control 3.13.11 specifically mandates FIPS-validated cryptography.

Here's something most contractors get wrong: it is the manufacturer's job — Cisco, Microsoft, whoever — to submit their product to a NIST-approved testing facility and put it through a battery of tests. The government doesn't test your network. The vendor earns the certificate; you verify it.

Every validated module gets a CMVP certificate number — a public record at csrc.nist.gov. No certificate number means no validation.

Why does "FIPS compliant" encryption fail CMMC assessments?

"FIPS compliant" means a product relies on FIPS-validated components for cryptographic functionality — but the product itself has never been tested. There is no official definition of "FIPS compliant" anywhere in the FIPS 140 standard. The industry coined the phrase on its own.

A CMMC instructor explained it this way: the manufacturer built the router using FIPS rules, but never sent it to the FIPS organization for testing — because testing costs too much money. It lacks the official seal of approval. That seal is the only thing a C3PAO assessor will accept.

How does FIPS encryption status affect your SPRS score?

Control 3.13.11 carries real weight in the CMMC assessment methodology. Getting it wrong isn't a footnote — it's a scored failure that directly impacts your SPRS score:

With CMMC now applying to all ~250,000 Defense Industrial Base companies that handle Controlled Unclassified Information (CUI), this requirement has never been more broadly enforced. Either you have a CMVP certificate number proving your validated module, or you don't.

How do you prove FIPS validation to a C3PAO assessor?

Assessors don't want to fish through a 200-page binder. They need to see three specific things that connect precisely:

Beyond the three-part test, also prepare:

• A Crypto Module Reporting Table (CMRT) mapping every validated module to its data flow — both in transit (DIT) and at rest (DAR)
• Confirmation that your cloud provider's FedRAMP Moderate or High authorization covers FIPS validation
• A check that no certificates on your list have moved to "Historical" status

What FIPS 140 changes should contractors prepare for?

Two patterns catch contractors off guard late in the process:

The Bottom Line

To pass control 3.13.11, verify every cryptographic module in your environment against the NIST CMVP database at csrc.nist.gov. Match the exact manufacturer, module name, and firmware version to an active certificate. Document the CMVP certificate number in your System Security Plan (SSP). After any firmware update, re-verify that the running version still appears on the certificate — a version mismatch renders the module unvalidated.