Framework overlap

Does NIST SP 800-53 Rev 5 cover CMMC 2.0 Level 1?

You hold NIST SP 800-53 Rev 5 and have been told to do CMMC 2.0 Level 1. Here is how much overlaps, control by control.

100% of CMMC 2.0 Level 1 you already have

NIST SP 800-53 Rev 5 already covers about 100% of CMMC 2.0 Level 1, leaving 0 of 17 controls as genuinely new work.

Already covered 17 Likely covered 0 New work 0

What is genuinely new work

Nothing in NIST SP 800-53 Rev 5 reaches these. This is the list to scope.

Nothing. Every control is reached.

Show the 17 you already have
AC.L1-3.1.1
Authorized Access Control
AC.L1-3.1.2
Transaction and Function Control
AC.L1-3.1.20
External Connections
AC.L1-3.1.22
Control Public Information
IA.L1-3.5.1
Identification
IA.L1-3.5.2
Authentication
MP.L1-3.8.3
Media Disposal
PE.L1-3.10.1
Limit Physical Access
PE.L1-3.10.3
Escort Visitors
PE.L1-3.10.4
Physical Access Logs
PE.L1-3.10.5
Manage Physical Access
SC.L1-3.13.1
Boundary Protection
SC.L1-3.13.5
Public-Access System Separation
SI.L1-3.14.1
Flaw Remediation
SI.L1-3.14.2
Malicious Code Protection
SI.L1-3.14.4
Update Malicious Code Protection
SI.L1-3.14.5
System and File Scanning

How this is calculated

Already covered means a mapping runs from a control in NIST SP 800-53 Rev 5 to that control. Likely covered means no direct mapping exists but both frameworks map to the same control in a third standard. New work means neither. We keep those separate rather than adding them into one friendlier number, because blending them would present a two-hop inference as a verified fact.

Coverage is not symmetric. Run it the other way and you will get a different number; both are correct.

From 332,959 cross-framework control mappings across 723 frameworks, 531 of them verified against their source documents. It does not tell you that you are compliant: a mapped control means the two standards ask for the same thing, not that you have done it.

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