NIST SP 800-171A Rev 3 - Assessing CUI Security RequirementsvsMARS-E
See exactly how NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements controls map to MARS-E. Pre-computed mappings, identified gaps, and coverage analysis.
Need this as a report you can hand to an assessor? A coverage crosswalk for this pair can be built to order.
According to the TheArtOfService Compliance Knowledge Graph:
NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements maps to MARS-E with 29% coverage across 10 directly mapped controls. Analysis of 35 NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements controls identifies 25 compliance gaps, primarily concentrated in System Protection and Communications.
Source: TheArtOfService Knowledge Graph | 35 controls analysed | 686 frameworks | 310K+ cross-framework mappings
Control Mappings
Showing 20 of 23 mapped controls across 4 domains. Sign up to explore all 310K+ mappings across 686 frameworks.
System Protection and Communications(13 mappings)
Audit, Assessment, and Monitoring(3 mappings)
Awareness, Training, and Personnel(2 mappings)
Access Control and Identification(2 mappings)
+3 more mappings
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A NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements to MARS-E crosswalk, built to order
The table above lists candidate mappings. A crosswalk answers the narrower question you are probably here for: which MARS-E controls your existing NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements work already satisfies, which are real gaps, and the reasoning behind every claim so you can check it. One pair, $299, one time.
This direction has not been through crosswalk review and sign off, so no coverage figure is published for it. Reporting an unreviewed number would be worse than reporting none. It can be built to order at the same price as a pair that is already on the shelf.
If the two frameworks turn out to have too little in common for a crosswalk to help you, we say so and refund it rather than send a number worth nothing.
This direction has not been through crosswalk review and sign off, so no coverage figure is published for it. Reporting an unreviewed number would be worse than reporting none. It can be built to order at the same price as a pair that is already on the shelf.
If the two frameworks turn out to have too little in common for a crosswalk to help you, we say so and refund it rather than send a number worth nothing.
- Every evidenced control, with the reasoning behind it
- Every gap, with what it requires
- Its level of review stated plainly, not a bare number
Why this page shows two different percentages. The 29% in the header counts how many NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements controls carry at least one candidate mapping in the graph, before any review. The crosswalk percentage counts something stricter: how many MARS-E controls are actually evidenced, after a pass that argued against each mapping and kept only what survived. They answer different questions and they are not meant to agree.
A crosswalk narrows the work. It does not replace an audit, and your assessor may take a different view on individual controls. Mappings between frameworks are judgements, not text printed in either standard, which is why every claim in the report shows its reasoning. Questions go to support@theartofservice.com.
Related Comparisons
Other NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements comparisons
Other MARS-E comparisons
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What are the key differences between NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements and MARS-E?
NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements has 35 controls across its framework, while MARS-E covers 8 controls. Direct mapping analysis identifies 10 overlapping controls (29% coverage). The frameworks diverge most significantly in System Protection and Communications, where 11 NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements controls have no direct MARS-E equivalent.
How many controls map between NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements and MARS-E?
Of 35 total NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements controls, 10 map directly to MARS-E controls, representing 29% coverage. The remaining 25 controls represent compliance gaps requiring additional documentation or compensating controls to satisfy both frameworks simultaneously.
What are the compliance gaps when mapping NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements to MARS-E?
25 NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements controls have no direct equivalent in MARS-E. The highest concentration of gaps is in System Protection and Communications with 11 unmapped controls. These gaps represent areas where additional controls, policies, or documentation must be created to achieve compliance with both frameworks.
Which control domains have the most gaps between NIST SP 800-171A Rev 3 - Assessing CUI Security Requirements and MARS-E?
The domain with the highest gap count is System Protection and Communications (11 gaps). Export the full domain-by-domain gap breakdown via the Professional tier to generate a prioritised remediation roadmap.
Related Resources
This platform provides educational compliance tools, not legal, regulatory, or professional compliance advice. Cross-framework mappings are AI-assisted interpretations and do not reproduce or replace official standards. Framework names and trademarks belong to their respective owners. Consult qualified professionals for your specific compliance requirements. See our Terms of Service.