← AC-3

Audited Override of Access Control Mechanisms

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1 Overlay 5 Related Controls
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Requirements NIST SOURCE

Employ an audited override of automated access control mechanisms under [conditions] by [roles].

Discussion (NIST Supplemental Guidance)

In certain situations, such as when there is a threat to human life or an event that threatens the organization’s ability to carry out critical missions or business functions, an override capability for access control mechanisms may be needed. Override conditions are defined by organizations and used only in those limited circumstances. Audit events are defined in AU-2 . Audit records are generated in AU-12.

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-3(10) 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. conditions under which to employ an audited override of automated access control mechanisms are defined;
  2. roles allowed to employ an audited override of automated access control mechanisms are defined;
  3. an audited override of automated access control mechanisms is employed under <AC-03(10)_ODP[01] conditions> by <AC-03(10)_ODP[02] roles>.

Examine

[SELECT FROM: Access control policy; procedures addressing access enforcement; system design documentation; system configuration settings and associated documentation; conditions for employing audited override of automated access control mechanisms; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with access enforcement responsibilities; system/network administrators; organizational personnel with information security responsibilities].

Test

[SELECT FROM: Mechanisms implementing access enforcement functions].

Overlays

Showing the OT/ICS overlay for the parent control AC-3 — see the AC-3(10) 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

  • Base control: Included (matches standard baseline)

MODERATE

  • Base control: Included (matches standard baseline)

HIGH

  • Base control: Included (matches standard baseline)
  • Added: (11)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AC-3(10). 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 design documentation
  • system configuration settings and associated documentation

Testing

  • Mechanisms implementing access enforcement functions

Other Records

  • procedures addressing access enforcement
  • conditions for employing audited override of automated access control mechanisms
  • system audit records
  • other relevant documents or records