CHG-04: Prohibition Of Changes
Mechanisms exist to prohibit unauthorized changes, unless approved through the organization's defined change management processes.
Renumbered: Formerly CHG-02.1 in SCF 2025.4.
Code reused: In SCF 2025.4 and earlier, CHG-04 was Access Restriction For Change. That control is now CHG-04.1.
Control Question: Does the organization prohibit unauthorized changes, unless approved through the organization's defined change management processes?
General (25)
| Framework | Mapping Values |
|---|---|
| AICPA TSC 2017:2022 (used for SOC 2) (source) | CC6.8 CC8.1-POF2 |
| CSA CCM 4.1.0 | CCC-03 CCC-04 |
| CSA IoT SCF 2 | GVN-05 |
| GovRAMP | CM-03(01) |
| GovRAMP High | CM-03(01) |
| ISO 42001 2023 | 6.3 |
| MPA Content Security Program 5.3.1 | TS-2.6 |
| NIST 800-53 R4 | CM-3(1) |
| NIST 800-53 R5.2 | CM-03(01) |
| NIST 800-53B R5 (high) (source) | CM-03(01) |
| NIST 800-82 R3 | CM-03(01) |
| NIST 800-82 R3 HIGH OT Overlay | CM-03(01) |
| NIST 800-161 R1 | CM-3(1) |
| NIST 800-161 R1 Level 2 | CM-3(1) |
| NIST 800-161 R1 Level 3 | CM-3(1) |
| NIST 800-171 R3 (source) | 03.04.02.b 03.04.03.a 03.04.03.b 03.07.05.a |
| NIST 800-171A R3 (source) | A.03.04.02.b[01] A.03.04.03.a A.03.04.03.b[02] A.03.04.05[05] A.03.07.05.a[01] |
| NIST 800-207 | NIST Tenet 5 |
| NIST CSF 2.0 (source) | ID.RA-07 |
| PCI DSS 4.0.1 (source) | 1.2.2 6.5 6.5.1 |
| PCI DSS 4.0.1 SAQ A-EP (source) | 1.2.2 6.5.1 |
| PCI DSS 4.0.1 SAQ C (source) | 6.5.1 |
| PCI DSS 4.0.1 SAQ D Merchant (source) | 1.2.2 6.5.1 |
| PCI DSS 4.0.1 SAQ D Service Provider (source) | 1.2.2 6.5.1 |
| Shared Assessments SIG 2025 | G.2 |
US (2)
| Framework | Mapping Values |
|---|---|
| USA Federal FedRAMP R5 (high) | CM-03(01) |
| USA California CCPA 2025 | 7123(c)(4)(C) 7123(c)(5)(D) 7123(c)(5)(E) |
EMEA (1)
| Framework | Mapping Values |
|---|---|
| EMEA EU EBA GL/2019/04 | 3.4.4.37 |
APAC (3)
| Framework | Mapping Values |
|---|---|
| APAC Japan ISMAP | 14.2.4 14.2.4.1 14.2.4.2 14.2.4.3 14.2.4.4 14.2.4.5 14.2.4.6 |
| APAC New Zealand NZISM 3.9 | 18.1.10.C.02 20.2.15.C.02 20.2.15.C.05 |
| APAC Singapore MAS TRM 2021 | 7.5.2 |
Americas (3)
| Framework | Mapping Values |
|---|---|
| Americas Canada ITSP-10-171 2025 | 03.04.02.B 03.04.03.A 03.04.03.B 03.07.05.A |
| Americas Canada OSFI B-13 2022 | 2.5 2.5.1 |
| Americas Canada OSFI Self-Assessment Guidance | 2.5.1 2.5.3 |
Capability Maturity Model
Level 0 — Not Performed
Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.
Level 1 — Performed Informally
Change Management (CHG) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include: ▪ Policies, standards & procedures associated with CHG domain capabilities provide limited coverage due to the depth and breadth of the existing documentation. ▪ Change management-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices. ▪ Requests for Change (RFC) are submitted to IT and/or cybersecurity personnel. ▪ Prior to changes being made, RFCs are informally reviewed for cybersecurity and/or data protection ramifications. ▪ Documented change control processes are either informal or do not exist.
Level 2 — Planned & Tracked
Change Management (CHG) capabilities are requirements-driven, but are not standardized across the entity (e.g., local/regional level consistency). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with CHG domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with CHG domain capabilities are documented and maintained by process owners. ▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with CHG domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Change management-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Change management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel. ▪ Business stakeholders and process owners ensure changes to Technology Assets, Applications and/or Services (TAAS) within the System Development Lifecycle (SDLC) are controlled through formal change control procedures. ▪ Configuration management practices prevent unauthorized changes by limiting and reviewing permissions to modify TAAS components within a production/operational environment
Level 3 — Well Defined
Change Management (CHG) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with CHG domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function. ▪ Standardized Operating Procedures (SOP) associated with CHG domain capabilities are well-documented and kept current by process owners. ▪ A centralized Change Management Office (CMO), or similar function, is appropriately staffed and supported to implement and maintain CHG domain capabilities. ▪ Technical procedures (e.g., ITIL change enablement) are utilized along with change management governance capabilities (e.g., Change Advisory Board (CAB)) to ensure successful, efficient and secure change management operations. ▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with CHG domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls). ▪ An implemented and operational capability exists to prohibit unauthorized changes, unless organization-approved change requests are received.
Level 4 — Quantitatively Controlled
Change Management (CHG) capabilities, in addition to being standardized across the entity and centrally managed to ensure consistency across Technology Assets, Applications, Services and/or Data (TAASD), efforts are metrics driven to provide sufficient insight for decision makers to predict optimal performance, ensure continued operations and/or identify areas for improvement. Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Applicable SCR-CMM Level 3 (Well Defined) capabilities are implemented and operational. ▪ Metrics reporting includes quantitative analysis of Key Performance Indicators (KPIs). ▪ Metrics reporting includes quantitative analysis of Key Risk Indicators (KRIs). ▪ Scope of metrics, KPIs and KRIs covers organization-wide cybersecurity and data protection controls, including functions performed by third-parties. ▪ Organizational leadership maintains a formal process to objectively review and respond to metrics, KPIs and KRIs (e.g., monthly or quarterly review). ▪ Based on metrics analysis, process improvement recommendations are submitted for review and are handled in accordance with change control processes. ▪ Business and technical stakeholders are involved in reviewing and approving proposed changes to evolve capabilities.
Level 5 — Continuously Improving
Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions: ▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control. ▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies. ▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.
Assessment Objectives
- CHG-04_A01 mechanisms used to automate configuration change control are defined.
- CHG-04_A02 organization-defined automated mechanisms are used to prohibit unauthorized changes unless the change is approved through the organization's defined change management processes.
- CHG-04_A03 approval authorities to be notified of and request approval for proposed changes to the system are defined.
- CHG-04_A04 the time period after which to highlight changes that have not been approved or disapproved is defined.
- CHG-04_A05 personnel to be notified when approved changes are complete is/are defined.
- CHG-04_A06 organization-defined automated mechanisms are used to document proposed changes to the system.
- CHG-04_A07 organization-defined automated mechanisms are used to notify organization-defined approval authorities of proposed changes to the system and request change approval.
- CHG-04_A08 organization-defined automated mechanisms are used to highlight proposed changes to the system that have not been approved or disapproved within an organization-defined time period.
- CHG-04_A09 organization-defined automated mechanisms are used to document all changes to the system.
- CHG-04_A10 organization-defined automated mechanisms are used to notify organization-defined personnel when approved changes to the system are completed.
- CHG-04_A11 proposed configuration-controlled changes to the system are approved or disapproved with explicit consideration for security impacts.
- CHG-04_A12 logical access restrictions associated with changes to the system are approved.
Evidence Requirements
- E-CHG-02 Charter - Change Control Board (CCB)
-
Documented evidence of the organization's Change Control Board (CCB) charter and mission to govern the organization's change control processes.
Change Management
Technology Recommendations
Micro/Small
- Role Based Access Control (RBAC)
- Manual processes/workflows
- Application whitelisting
Small
- Role Based Access Control (RBAC)
- Manual processes/workflows
- Application whitelisting
Medium
- Role Based Access Control (RBAC)
- Application whitelisting
- CimTrak Integrity Suite (https://cimcor.com/cimtrak)
Large
- Role Based Access Control (RBAC)
- Application whitelisting
- CimTrak Integrity Suite (https://cimcor.com/cimtrak)
Enterprise
- Role Based Access Control (RBAC)
- Application whitelisting
- CimTrak Integrity Suite (https://cimcor.com/cimtrak)