What This Objective Requires
CM.L2-3.4.3[b] focuses on accountability for system changes that carry higher security or operational risk. Once high-risk changes are defined, organizations must be able to prove those changes were reviewed and approved before implementation.
Approval records should clearly show the proposed change, the approver, the approval date and time, and the scope of what was authorized. This documentation makes change decisions auditable and defensible within a broader compliance framework overview.
Why Pre-Approval Matters for High-Risk Changes
High-risk changes can directly impact access controls, security configurations, system availability, and baseline integrity. Without pre-approval, changes may introduce vulnerabilities or bypass established safeguards.
From a compliance perspective, lack of pre-approval evidence is a common audit finding. Even technically sound changes can fail assessment if approval cannot be shown to have occurred before implementation.
How to Prove Changes Were Approved Before Implementation
Use a formal change management workflow that requires approval before implementation steps can begin. This is often handled through a ticketing system or structured change request form.
Ensure the approval action is time-stamped and tied to a specific approver role. Link the approved request to the actual implementation using change logs, configuration records, or version control references.
For organizations working toward NIST 800-171 compliance, this traceability is critical to demonstrating that configuration and security changes are controlled and intentional.
High-Risk Change Approval Workflow
| Step | Purpose | Key Evidence | Owner |
|---|---|---|---|
| Change request submitted | Document proposed change and scope | Change ticket or request form | Requester / system owner |
| Risk and impact review | Evaluate security and operational impact | Review notes, attached analysis | Reviewer / approver |
| Approval recorded | Authorize change before execution | Approval timestamp and approver identity | Authorized approver |
| Change implemented | Apply approved change | Change log or configuration record | Administrator |
| Validation and closure | Confirm change matches approval | Validation notes and closure record | System owner |
Evidence Assessors Commonly Expect
Assessors typically expect to see change records showing approval occurred before implementation, along with proof that the approved change was what was actually deployed.
This may include ticket exports, screenshots, configuration logs, or version control references that clearly connect approval to execution.
Common Gaps to Avoid
Common gaps include informal approvals that are not captured in the official workflow, missing timestamps, or approvals recorded after the change was already made.
Another frequent issue is failing to define which changes are considered high risk, leading to inconsistent application of pre-approval requirements.
How Cuick Trac Supports This Objective
Cuick Trac supports disciplined change management by helping organizations maintain traceable records that connect approvals to implemented changes.
This consistency reduces audit risk and helps ensure high-risk changes are reviewed, authorized, and documented in a defensible way.
FAQ
What does CM.L2-3.4.3[b] require?
It requires proof that high-risk changes were reviewed and approved before implementation, with documentation showing what changed, who approved it, and when.
What counts as evidence of pre-approval?
Evidence commonly includes approved change tickets or forms with timestamps, approver identity, and a clear link to the implemented change.
What is a common gap assessors identify?
A common gap is being unable to show that approval occurred before the change was made, even if approval exists afterward.