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SEA-19: Memory Protection

SEA 8 — High Protect

Mechanisms exist to implement security safeguards to protect system memory from unauthorized code execution.

Renumbered: Formerly SEA-10 in SCF 2025.4.

Code reused: In SCF 2025.4 and earlier, SEA-19 was Previous Logon Notification. That control is now SEA-29.

Control Question: Does the organization implement security safeguards to protect system memory from unauthorized code execution?

General (17)
Framework Mapping Values
GovRAMP SI-16
GovRAMP Low SI-16
GovRAMP Low+ SI-16
GovRAMP Moderate SI-16
GovRAMP High SI-16
MITRE ATT&CK 16 T1003.001 T1047 T1055.009 T1059 T1059.001 T1059.002 T1059.003 T1059.004 T1059.005 T1059.006 T1059.007 T1059.008 T1059.011 T1218 T1218.001 T1218.002 T1218.003 T1218.004 T1218.005 T1218.008 T1218.009 T1218.012 T1218.013 T1218.014 T1218.015 T1505.004 T1543 T1543.002 T1547.004 T1547.006 T1548 T1548.004 T1565 T1565.001 T1565.003 T1611
NIST 800-53 R4 SI-16
NIST 800-53 R5.2 SI-16
NIST 800-53B R5 (moderate) (source) SI-16
NIST 800-53B R5 (high) (source) SI-16
NIST 800-82 R3 SI-16
NIST 800-82 R3 MODERATE OT Overlay SI-16
NIST 800-82 R3 HIGH OT Overlay SI-16
NIST 800-160 Vol2 R1 SI-16
NIST 800-171 R2 (source) NFO - SI-16
NIST 800-172 R3 03.14.14E
NIST 800-172A R3 DS-A.03.14.14E
US (6)
EMEA (1)
Framework Mapping Values
EMEA Germany C5 2026 OPS-32.01B OPS-32.01B.1 OPS-32.01B.2 OPS-32.01B.3 OPS-32.01B.5 OPS-32.03B OPS-32.03B.2 OPS-32.03B.4 OPS-32.03B.5 OPS-32.01AC OPS-32.01AC.1 OPS-32.01AC.3 OPS-32.01AC.5 OPS-33.01B OPS-33.02B OPS-33.03B
APAC (1)
Framework Mapping Values
APAC Singapore CCOP CII 2026 10.3.6

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

Secure Engineering & Architecture (SEA) 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 SEA domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with SEA 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 SEA domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Secure engineering and architecture-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Secure engineering and architecture management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel. ▪ IT and/or cybersecurity personnel define entity-specific secure engineering practices to protect the Confidentiality, Integrity, Availability and Safety (CIAS) of the entity's TAASD. ▪ IT and/or cybersecurity personnel align secure engineering practices with the entity's broader IT architecture practices. ▪ IT and/or cybersecurity personnel use secure engineering practices to influence Secure Baseline Configurations (SBC).

Level 3 — Well Defined

Secure Engineering & Architecture (SEA) 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 SEA 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 SEA domain capabilities are well-documented and kept current by process owners. ▪ A cybersecurity engineering / architecture team, or similar function, is appropriately staffed and supported to implement and maintain RSK domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of secure engineering management operations (e.g., project 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 SEA 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). ▪ Secure Baseline Configurations (SBC) enforce the secure engineering principles on all applicable Technology Assets, Applications and/or Services (TAAS). ▪ An implemented and operational capability exists to implement security safeguards to protect system memory from unauthorized code execution.

Level 4 — Quantitatively Controlled

Utilize SCR-CMM Level 3 criteria definitions: ▪ There are no defined Level 4 criteria, since it is reasonable to assume a quantitatively-controlled process is not necessary to operationalize this control. ▪ While it may be possible to develop “metrics-driven” capabilities for this control, the criteria would be organization-specific to define.

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

  1. SEA-19_A01 controls to be implemented to protect the system memory from unauthorized code execution are defined.
  2. SEA-19_A02 controls are implemented to protect the system memory from unauthorized code execution.

Technology Recommendations

Micro/Small

  • Secure Baseline Configurations (SBC)

Small

  • Secure Baseline Configurations (SBC)

Medium

  • Secure Baseline Configurations (SBC)

Large

  • Secure Baseline Configurations (SBC)

Enterprise

  • Secure Baseline Configurations (SBC)

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