CMMC Level 2 · Maintenance

CMMC Level 2 3.7.3: Equipment Sanitization

3.7.3 — Equipment Sanitization — is one of the 110 CMMC Level 2 requirements. This page gives the exact requirement text, every assessment objective, and what evidence an assessor will ask for.

Last reviewed: October 18, 2026

What this requirement asks

Ensure equipment removed for off-site maintenance is sanitized of any CUI.

This is a CMMC Level 2 requirement in the Maintenance family, drawn from NIST SP 800-171 Rev. 2. An assessor evaluates it objective by objective — every objective below must be supported by evidence, not just described in a policy.

Assessment objectives (1)

  • 3.7.3[a] — equipment to be removed from organizational spaces for off-site maintenance is sanitized of any CUI

What an assessor examines

Examine:

  • System maintenance policy
  • procedures addressing controlled system maintenance
  • maintenance records
  • manufacturer or vendor maintenance specifications
  • equipment sanitization records
  • media sanitization records
  • system security plan
  • other relevant documents or records

Interview:

  • Personnel with system maintenance responsibilities
  • personnel with information security responsibilities
  • personnel responsible for media sanitization
  • system or network administrators

Test:

  • Organizational processes for scheduling, performing, documenting, reviewing, approving, and monitoring maintenance and repairs for systems
  • organizational processes for sanitizing system components
  • mechanisms supporting or implementing controlled maintenance
  • mechanisms implementing sanitization of system components

Evidence that defends it

Document sanitization evidence

Check your readiness

Score this requirement against your own environment with the Level 2 self-assessment checklist, or estimate your SPRS score with the free CMMC compliance tool. Self-reported answers are planning signals only — they do not establish a verified or assessor-accepted result.

Frequently asked questions

Is 3.7.3 required for CMMC Level 2?

Yes. 3.7.3 (Equipment Sanitization) is one of the 110 Level 2 requirements from NIST SP 800-171 Rev. 2. Every assessment objective must be met with supporting evidence.

What evidence satisfies 3.7.3?

Document sanitization evidence

Further reading

Related Athena pages and authoritative external references.

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