NIST 800-53 r5 · Controls catalogue · Family SC
SC-3Security Function Isolation
Isolate security functions from nonsecurity functions.
Last updated: 16 October 2026 07:24 UTC
Implementations targeting this control (0)
- No implementations targeting this control yet.
ATT&CK techniques this control mitigates (18)
- T1003.001 LSASS Memory Credential Access
- T1021.003 Distributed Component Object Model Lateral Movement
- T1047 Windows Management Instrumentation Execution
- T1068 Exploitation for Privilege Escalation Privilege Escalation
- T1134.005 SID-History Injection Stealth, Privilege Escalation
- T1189 Drive-by Compromise Initial Access
- T1190 Exploit Public-Facing Application Initial Access
- T1203 Exploitation for Client Execution Execution
- T1210 Exploitation of Remote Services Lateral Movement
- T1211 Exploitation for Stealth Stealth
- T1212 Exploitation for Credential Access Credential Access
- T1559 Inter-Process Communication Execution
- T1559.001 Component Object Model Execution
- T1559.002 Dynamic Data Exchange Execution
- T1602 Data from Configuration Repository Collection
- T1602.001 SNMP (MIB Dump) Collection
- T1602.002 Network Device Configuration Dump Collection
- T1611 Escape to Host Privilege Escalation
Weaknesses this control addresses (6)AI-assisted
CWEs ranked by how often they appear in real CVEs. The rationale describes how this control reduces exploitability of each weakness class.
| CWE | Name | CVEs | Why this control addresses it |
|---|---|---|---|
CWE-284 | Improper Access Control | 8,100+ | By design the control implements a hard boundary that prevents unauthorized actors or non-security functions from reaching security-critical resources or entry points. |
CWE-269 | Improper Privilege Management | 4,000+ | The control enforces separation so that privilege management decisions and operations for security functions cannot be influenced or subverted by non-security code. |
CWE-732 | Incorrect Permission Assignment for Critical Resource | 2,000+ | Security functions become critical resources whose permissions can be assigned narrowly and independently of the rest of the system. |
CWE-250 | Execution with Unnecessary Privileges | 300+ | Isolating security functions allows them to execute with only the privileges they require while preventing non-security code from inheriting or accessing those privileges. |
CWE-1220 | Insufficient Granularity of Access Control | 100+ | Isolation supplies an explicit, enforceable granularity boundary between security and non-security functions that coarser access-control schemes lack. |
CWE-653 | Improper Isolation or Compartmentalization | 85 | The control directly supplies the compartmentalization that CWE-653 requires between security and non-security domains. |
Top CVEs where this control is the strongest mitigation
| CVE | Risk | CVSS | EPSS | Match |
|---|---|---|---|---|
CVE-2025-1974 UPD | 9.9 | 9.8 | 0.9938 | good |
CVE-2025-21590 KEV UPD | 7.5 | 4.4 | 0.0174 | good |
CVE-2026-43997 UPD | 7.5 | 10.0 | 0.0077 | good |
CVE-2026-53421 | 7.5 | 9.8 | 0.0114 | good |
CVE-2024-33768 UPD | 7.4 | 9.8 | 0.0085 | good |
CVE-2026-4692 UPD | 7.4 | 10.0 | 0.0049 | good |
CVE-2026-44005 UPD | 7.4 | 10.0 | 0.0083 | good |
CVE-2026-53405 | 7.4 | 9.8 | 0.0075 | good |
CVE-2026-63071 | 7.4 | 9.8 | 0.0075 | good |
CVE-2026-0542 UPD | 7.0 | 9.2 | 0.0060 | good |
CVE-2025-4083 UPD | 6.9 | 9.1 | 0.0045 | good |
CVE-2025-57738 UPD | 6.8 | 7.2 | 0.2319 | good |
CVE-2026-12297 UPD | 6.7 | 9.6 | 0.0039 | good |
CVE-2025-5476 UPD | 6.5 | 8.8 | 0.0036 | good |
CVE-2025-12805 UPD | 6.1 | 8.1 | 0.0038 | good |
CVE-2026-15738 | 6.1 | 8.5 | 0.0065 | good |
CVE-2024-23682 UPD | 5.8 | 8.2 | 0.0035 | good |
CVE-2024-23683 UPD | 5.8 | 8.2 | 0.0036 | good |
CVE-2024-47520 UPD | 5.8 | 7.6 | 0.0041 | good |
CVE-2025-34201 | 5.8 | 7.8 | 0.0030 | good |
CVE-2024-0135 UPD | 5.7 | 7.6 | 0.0111 | good |
CVE-2026-4282 UPD | 5.7 | 7.4 | 0.0052 | good |
CVE-2024-0136 UPD | 5.6 | 7.6 | 0.0067 | good |
CVE-2025-53710 UPD | 5.6 | 7.5 | 0.0028 | good |
CVE-2026-42782 UPD | 5.6 | 7.2 | 0.0086 | good |