END-03.4: Binary or Machine-Executable Code
Mechanisms exist to prohibit the use of binary or machine-executable code from sources with limited or no warranty and without access to source code.
Renumbered: Formerly END-06.7 in SCF 2025.4.
Control Question: Does the organization prohibit the use of binary or machine-executable code from sources with limited or no warranty and without access to source code?
General (6)
| Framework | Mapping Values |
|---|---|
| NIST 800-53 R4 | SI-7(14) |
| NIST 800-53 R5.2 | CM-07(08) |
| NIST 800-82 R3 | CM-07(08) |
| NIST 800-161 R1 | CM-7(8) SI-7(14) |
| NIST 800-161 R1 Level 2 | CM-7(8) SI-7(14) |
| NIST 800-161 R1 Level 3 | CM-7(8) SI-7(14) |
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
Endpoint Security (END) 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 END domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with END 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 END domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Endpoint security-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Endpoint security 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
Endpoint Security (END) 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 END 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 END domain capabilities are well-documented and kept current by process owners. ▪ An endpoint technology management team, or similar function, is appropriately staffed and supported to implement and maintain END domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of endpoint security operations (e.g., unified endpoint 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 END 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 the use of binary or machine-executable code from sources with limited or no warranty and without access to source code.
Level 4 — Quantitatively Controlled
Endpoint Security (END) 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
- END-03.4_A01 the use of binary or machine-executable code is prohibited when it originates from sources with limited or no warranty or without the provision of source code.
- END-03.4_A02 exceptions to the prohibition of binary or machine-executable code from sources with limited or no warranty or without the provision of source code are allowed only for compelling mission or operational requirements.
- END-03.4_A03 exceptions to the prohibition of binary or machine-executable code from sources with limited or no warranty or without the provision of source code are allowed only with the approval of the authorizing official.
Technology Recommendations
Micro/Small
- Secure Baseline Configurations (SBC)
- Antimalware software
Small
- Secure Baseline Configurations (SBC)
- Antimalware software
Medium
- Secure Baseline Configurations (SBC)
- Antimalware software
Large
- Secure Baseline Configurations (SBC)
- Antimalware software
Enterprise
- Secure Baseline Configurations (SBC)
- Antimalware software