NIST SP 800-171 Rev 2 · 3.1 Access Control
3.1.19 Encrypt CUI on mobile devices
Encrypt CUI on mobile devices and mobile computing platforms
- SPRS weight
- 3
- 3 points deducted from 110 when not implemented.
- CMMC level
- L2
- Level 2 only; not among the 17 Level 1 practices.
- Assessment objectives
- 2
- From NIST SP 800-171A, each one a “determine if” an assessor answers.
What an assessor checks
NIST SP 800-171A breaks 3.1.19 into 2 objectives. Every one has to be met for the requirement to be met; a partial answer scores as not implemented.
- [a]Determine if mobile devices and mobile computing platforms that process, store, or transmit CUI are identified.
- [b]Determine if encryption is employed to protect CUI on identified mobile devices and mobile computing platforms.
If it is open: POA&M eligibility
Not POA&M-eligible: above the 1-point ceiling · 3 points deducted
Worth 3 points. No requirement over 1 point may appear on a Level 2 POA&M, so this has to be closed before the assessment.
A POA&M is only permitted at a score of 88 or above, and closes in one 180-day window. Check a full gap list or compute your score.
Where 3.1.19 maps
NIST SP 800-53 Rev 5
- AC-19 Access Control for Mobile Devices
NIST CSF 2.0
- Data-in-use is protected
SOC 2
No direct mapping.
Query it from your own tools
This page and the MacTech CMMC MCP server render the same dataset. Ask your assistant and it will answer from the methodology, not from memory.
lookup_control 3.1.19 get_assessment_objectives 3.1.19 generate_poam_entries ["3.1.19"]
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