TPM-07: Adequate Supply
Mechanisms exist to develop and implement a spare parts strategy to ensure that an adequate supply of critical components is available to meet operational needs.
Renumbered: Formerly TPM-03.4 in SCF 2025.4.
Code reused: In SCF 2025.4 and earlier, TPM-07 was Monitoring for Third-Party Information Disclosure. That control is now MON-19.1.
Control Question: Does the organization develop and implement a spare parts strategy to ensure that an adequate supply of critical components is available to meet operational needs?
General (5)
| Framework | Mapping Values |
|---|---|
| NIST 800-53 R5.2 | SR-05(01) |
| NIST 800-82 R3 | SR-05(01) |
| NIST 800-82 R3 MODERATE OT Overlay | SR-05(01) |
| NIST 800-82 R3 HIGH OT Overlay | SR-05(01) |
| NIST 800-160 Vol2 R1 | SR-05(01) |
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
SCR-CMM Level 1 criteria definitions are not available for this control: ▪ A reasonable person would conclude this control requires a structured process. ▪ At this level of maturity, the "ad hoc" nature of performing a capability informally would indicate the intent of the control is not met due to a lack of consistency and formality.
Level 2 — Planned & Tracked
Third-Party Management (TPM) 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 TPM domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with TPM 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 TPM domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Third-party management-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Asset management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel.
Level 3 — Well Defined
Third-Party Management (TPM) 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 TPM 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 TPM domain capabilities are well-documented and kept current by process owners. ▪ A procurement team, or similar function, is appropriately staffed and supported to implement and maintain TPM domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of third-party management operations (e.g., TPRM risk management solution and vendor management solution). ▪ 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 TPM 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 develop and implement a spare parts strategy to ensure that an adequate supply of critical components is available to meet operational needs.
Level 4 — Quantitatively Controlled
Third-Party Management (TPM) 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
Third-Party Management (TPM) 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. ▪ Based on predictive analysis, process improvements are implemented according to “continuous improvement” practices that affect process changes. ▪ Stakeholders make time-sensitive decisions to support operational efficiency, which may include automated remediation actions via Artificial Intelligence (AI) or Machine Learning (ML) technologies.
Assessment Objectives
- TPM-07_A01 controls to ensure an adequate supply of critical system components are defined.
- TPM-07_A02 critical system components of which an adequate supply is required are defined.
- TPM-07_A03 controls are employed to ensure an adequate supply of critical system components.
Evidence Requirements
- E-TPM-11 Supplier Diversity & Concentration Risk Analysis
-
Documented evidence of supplier diversity, adequate supply and outsourcing limitation analyses addressing single-source / concentration dependencies.
Third-Party Management
Technology Recommendations
Micro/Small
- Keep basic spares (e.g., spare switch, drives) for critical equipment or rapid vendor replacement
Small
- Spare parts list for critical equipment
- Vendor support contracts with replacement SLAs
Medium
- Spare parts strategy for critical components
- Vendor hardware support agreements (e.g., next-business-day)
- Spares tracked in inventory
Large
- Formal spare parts and supplier continuity strategy
- 4-hour or better vendor support for critical infrastructure
- Alternate supplier qualification
Enterprise
- Enterprise supply chain resilience program (spare parts strategy, lifecycle planning, alternate suppliers)
- Supply chain risk monitoring
- Reserve hardware inventory