# AC-03 Access Enforcement — NIST 800-53 Rev5 control

> FedRAMP Consolidated Rules for 2026 v2026.07.14.01 · updated 2026-07-14
> Canonical page: /control/ac-3

Canonical id: `ac-3` · family `AC`

> Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

_Control title and statement: NIST SP 800-53 Rev5 catalog (the pinned commit is in `/api` under `control_text`). The FedRAMP rules reference these controls by id only; everything below is what FedRAMP says about this id._

## Rev5 baseline membership

- certification class B (in the annual independent assessment)
- certification class C (in the annual independent assessment)
- certification class D (in the annual independent assessment)

## Key Security Indicators that reach it

- `KSI-IAM-APM` — Adopting Passwordless Methods (Identity and Access Management)
  Secure passwordless methods are used for user authentication and authorization when feasible, otherwise strong passwords with phishing-resistant MFA is used.
- `KSI-IAM-ELP` — Ensuring Least Privilege (Identity and Access Management)
  Identity and access management measures are used and persistently reviewed to ensure each user or device can only access the resources they need.
- `KSI-IAM-JIT` — Authorizing Just-in-Time (Identity and Access Management)
  A least-privileged, role and attribute-based, and just-in-time security authorization model is used and persistently reviewed for all user and non-user accounts and services.

## FedRAMP guidance

_No FedRAMP-specific guidance attaches to this control._

## Annual independent assessment

In the annual assessment subset for class B, C, D.