NIST SP 800-53 Rev. 5 SR-2 — Supply Chain Risk Management Plan

What this control requires

Develop and maintain a comprehensive supply chain risk management plan that covers the entire lifecycle of systems, system components, and services. This includes research, design, acquisition, and disposal phases. Review and update the plan periodically or in response to changes. Protect the plan from unauthorized access and modification. This control supports the Supply Chain Risk Management, Policy and Planning capability within the Supply Chain Risk Management family.

In plain English

Develop and maintain a comprehensive supply chain risk management plan that covers the entire lifecycle of systems, system components, and services. In practice, this means you can prove you policy management-level controls on a defined cadence.

Why it matters

SP 800-53 is the catalogue every U.S. federal authorisation (FedRAMP, FISMA, CMMC) and most regulated industries point at. A missing control surfaces as a Plan of Action & Milestones (POA&M) item that an Authorizing Official must approve before the Authority To Operate is granted or renewed.

This control is rated high. Auditors expect a named owner, a remediation SLA, and a tooling artefact that evidences continuous operation.

What an auditor looks for

A 3PAO (FedRAMP) or Independent Assessor (NIST RMF) tests against NIST SP 800-53A assessment procedures. For each control they expect a documented implementation that addresses every assessment objective (Examine, Interview, Test) and an implementation summary in the System Security Plan.

Within Supply Chain Risk Management, the assessor will trace your implementation back to the catalogue reference (Control SR-2) and look for objective evidence on the latest two assessment cycles.

How to implement

1. Write a short policy stating intent, scope and named owner.
2. Encode it as a platform guardrail — SCP, Azure Policy initiative, Organisation Policy, or repository policy.
3. Wire a monitoring signal that catches drift (CSPM rule, SIEM rule, scheduled query, Workspace alert) and ticket it.
4. Review on a documented cadence and capture the review in the risk register or compliance tracker.

Operational checklist

• Policy. Document the trigger, the owner and the cadence.
• Access. Document the trigger, the owner and the cadence.
• Review. Document the trigger, the owner and the cadence.
• Response. Document the trigger, the owner and the cadence.
• Chain. Document the trigger, the owner and the cadence.
• Scope: management, system, identity, review, management plan, components, services, capability.

Evidence to collect

• Identity Scan. IAM / IdP exports — Entra ID, Okta, IAM Identity Center, Workspace directory — showing accounts, roles, MFA state and last sign-in.

Identity analytics (Okta, SailPoint, Access Analyzer) demonstrates least-privilege. Focus: Supply Chain Risk Management Plan.

How it maps to other frameworks

Computed from shared tags, control component and key-operation subjects — handy when you are reconciling controls across an audit.

• NIST SP 800-171 Rev. 3 3.17.1 — Supply Chain Risk Management Plan
• CIS Controls v8 6.1 — Establish an Access Granting Process
• ISO/IEC 27001:2022 A.5.16 — Identity management

Related controls in NIST SP 800-53 Rev. 5

• Control SA-19(3) — Component Disposal
• Control SA-12(14) — Identity And Traceability
• Control SA-23 — Specialization
• Control SA-8(9) — Trusted Components
• Control SA-8(6) — Minimized Sharing
• Control SA-12 — Supply Chain Protection

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control SR-2

Topics: governance riskidentity accessidentity managementaccess reviewprivileged accesspatch management