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AC-6(6) AC · Access Control

Privileged Access by Non-organizational Users

LOW MODERATE HIGH
1 Overlay 4 Related Controls
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Requirements NIST SOURCE

Prohibit privileged access to the system by non-organizational users.

Discussion (NIST Supplemental Guidance)

An organizational user is an employee or an individual considered by the organization to have the equivalent status of an employee. Organizational users include contractors, guest researchers, or individuals detailed from other organizations. A non-organizational user is a user who is not an organizational user. Policies and procedures for granting equivalent status of employees to individuals include a need-to-know, citizenship, and the relationship to the organization.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for AC-6(6) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. privileged access to the system by non-organizational users is prohibited.

Examine

[SELECT FROM: Access control policy; procedures addressing least privilege; list of system-generated privileged accounts; list of non-organizational users; system configuration settings and associated documentation; audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with responsibilities for defining least privileges necessary to accomplish specified tasks; organizational personnel with information security responsibilities; system/network administrators].

Test

[SELECT FROM: Mechanisms prohibiting privileged access to the system].

Overlays

Showing the OT/ICS overlay for the parent control AC-6 — see the AC-6(6) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

Not applicable at this tier.

MODERATE

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (5) (7) (9) (10)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (3) (5) (7) (9) (10)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AC-6(6). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Access control policy
  • system security plan

Configuration

  • system configuration settings and associated documentation

Testing

  • Mechanisms prohibiting privileged access to the system

Other Records

  • procedures addressing least privilege
  • list of system-generated privileged accounts
  • list of non-organizational users
  • audit records
  • other relevant documents or records