NIST 800-53 vs 800-171: Differences and Which Applies

Side-by-Side

How CyberSilo Helps

Map shared technical evidence once in Compliance Standards Automation, then export packages oriented to selected 800-53 controls or 800-171 requirements.

Frequently Asked Questions

Is 800-171 a subset of 800-53?

800-171 requirements are derived from 800-53 with tailoring for nonfederal CUI environments. Treat them as related, not as a simple unchecked subset of the full catalog.

Do FedRAMP CSPs also need 800-171?

FedRAMP focuses on 800-53 baselines and overlays. 800-171 applies when nonfederal systems handle CUI under contracts that require it.

Should CMMC programmes use Rev 3 now?

Not for Level 2 assessments today. Keep Rev 2 for assessment; track Rev 3 for transition readiness.

Related NIST Resources

NIST hub · What Is NIST CSF 2.0? · 800-171 Rev 3 Changes