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NIST SP 800-172A Rev. 3

Assessing Enhanced Security Requirements for Controlled Unclassified Information

Date Published: May 2026

Supersedes: SP 800-172A (03/15/2022)

Planning Note (05/13/2026):

The assessment procedures in SP 800-172Ar3 are available in multiple data formats. The PDF of SP 800-172Ar3 is the authoritative source of the assessment procedures. If there are any discrepancies noted in the content between the CPRT datasetOSCAL dataset, and the SP 800-172Ar3 PDF, please contact [email protected] and refer to the PDF as the normative source.


Author(s)

Victoria Pillitteri (NIST), Ron Ross (NIST)

Abstract

Keywords

assessment; assessment procedure; assurance; enhanced security requirement; enhanced security requirement assessment; controlled unclassified information; Executive Order 13556; nonfederal organization; nonfederal system; security assessment
Control Families

None selected

Documentation

Publication:
https://doi.org/10.6028/NIST.SP.800-172Ar3
Download URL

Supplemental Material:
172Ar3 dataset on CPRT
172Ar3 dataset in OSCAL

Publication Parts:
SP 800-172 Rev. 3

Related NIST Publications:
SP 800-171 Rev. 3
SP 800-171A Rev. 3

Document History:
09/29/25: SP 800-172A Rev. 3 (Draft)
05/13/26: SP 800-172A Rev. 3 (Final)