# AC-05 Separation of Duties — NIST 800-53 Rev5 control

> FedRAMP Consolidated Rules for 2026 v2026.07.14.01 · updated 2026-07-14
> Canonical page: /control/ac-5

Canonical id: `ac-5` · family `AC`

> a. Identify and document [duties of individuals]; and b. Define system access authorizations to support separation of duties.

_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 C
- certification class D

## Key Security Indicators that reach it

- `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.
- `KSI-PIY-RIS` — Reviewing Investments in Security (Policy and Inventory)
  The effectiveness of the provider's investments in achieving security goals is persistently reviewed.
- `KSI-PIY-RSD` — Reviewing Security in the SDLC (Policy and Inventory)
  The effectiveness of building security and privacy considerations into the Software Development Lifecycle and aligning with CISA Secure By Design principles is persistently reviewed.

## FedRAMP guidance

_No FedRAMP-specific guidance attaches to this control._