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The Cisco ACI must be configured to disable the auxiliary USB port.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-271972CACI-ND-000057SV-271972r1114185_ruleCCI-000382medium
Description
Disable the USB port in those environments where physical access to the devices is not strictly controlled, or in environments where this extra layer of protection is required. Cisco Nexus 9000 switches running Cisco ACI code have the USB port enabled by default. When the USB port is enabled, switches will try to boot from the USB drive first. This may be a security risk in case a malicious actor has physical access to the switch, given they could power-cycle the device to try to boot the switch from a USB image that contains malicious code. Even if this is not a common scenario considering that most organizations have physical access security guidelines in place, Cisco ACI release 5.2(3) introduced the option to disable the USB port using a specific switch policy.
STIGDate
Cisco ACI NDM Security Technical Implementation Guide2025-12-11

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CFG-01Configuration Management Program
1.00
CFG-03Least Functionality
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (33) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(1)Monitoring and Control
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-17(9)Disconnect or Disable Access
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-4Information Flow Enforcement
1.00
AC-6(8)Privilege Levels for Code Execution
1.00
AC-6(9)Log Use of Privileged Functions
1.00
AU-12Audit Record Generation
1.00

+23 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.4.6
1.00
CCI1 mapping
CCI-000382
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.PS-01
1.00
PR.PS-05
1.00

Who does this work

5 NICE work roles and 5 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-271972r1114185_chk)

Verify the USB port is disabled: 1. Navigate to Fabric >> Access Policies >> Policies >> Switch >> USB Configuration >> default. 2. Verify the "Disable USB Port" box is checked. If the USB port is not disabled, this is a finding.

Fix Text (F-75929r1114185_fix)

Disable the USB port on all switches within the Cisco ACI fabric: 1. Navigate to Fabric >> Access Policies >> Policies >> Switch >> USB Configuration >> default. 2. Check the "Disable USB Port" box; this will disable the USB port on all switches within the Cisco ACI fabric.