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Apple iOS/iPadOS 18 must implement the management setting: enable USB Restricted Mode.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-268044AIOS-18-012200SV-268044r1031224_ruleCCI-000366medium
Description
The USB port on an iOS device can be used to access data on the device. The required settings ensure the Apple device password is entered before a previously trusted USB accessory can connect to the device. SFRID: FMT_SMF.1.1 #47
STIGDate
Apple iOS/iPadOS 18 Security Technical Implementation Guide2026-05-13

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (8) 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
END-01Endpoint Device Management (EDM)
1.00
END-04Malicious Code Protection (Anti-Malware)
1.00
END-06Endpoint File Integrity Monitoring (FIM)
1.00
MON-01Continuous Monitoring
1.00
MON-01.7File Integrity Monitoring (FIM)
1.00
CFG-02Secure Baseline Configurations
0.50
CFG-02.7Approved Configuration Deviations
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (100) 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-12Session Termination
1.00
AC-16(1)Dynamic Attribute Association
1.00
AC-17(1)Monitoring and Control
1.00
AC-2Account Management
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-24(1)Transmit Access Authorization Information
1.00
AC-25Reference Monitor
1.00

+90 more (top 10 by confidence shown)

NIST 800-1710 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.

3.4.1
1.00
3.4.2
1.00
CCI1 mapping
CCI-000366
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) 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.

DE.CM-09
1.00
PR.PS-01
1.00
PR.DS-10
0.50
PR.PSPlatform Security
0.50
PR.PS-05
0.50

Who does this work

10 NICE work roles and 9 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-268044r1031224_chk)

This is a supervised-only control. If the iPhone or iPad being reviewed is not supervised by the MDM, this control is automatically a finding. If the iPhone or iPad being reviewed is supervised by the MDM, review configuration settings to confirm "Allow USB Restricted Mode" is enabled. This check procedure is performed on both the device management tool and the iPhone and iPad device. Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review. In the iOS management tool, verify "Allow USB Restricted Mode" is checked (set to "True"). On the iPhone/iPad device: 1. Open the Settings app. 2. Tap "General". 3. Tap "VPN & Device Management". 4. Tap the Configuration Profile from the iOS management tool containing the restrictions policy. 5. Tap "Restrictions". 6. Verify there is no listing for "USB Accessories while locked allowed". If "Allow USB Restricted Mode" is not enabled in the management tool and there is a restriction listed in the profile on the Apple device, this is a finding. Note: The default configuration setting for "allow USB Restricted Mode" is "True" in most MDM products. This is the required setting. When set correctly, nothing will be listed in the Restrictions profile, and the user will be able to toggle USB accessories on/off. Note: "Allow USB Restricted Mode" may be called "Allow USB accessories while device is locked" in some MDM consoles. The required logic is to disable USB accessory connections when the device is locked.

Fix Text (F-71871r1030884_fix)

Install a configuration profile to configure "Allow USB Restricted Mode" to "True" in the management tool. This a supervised-only control. Note: The default configuration setting for "allow USB Restricted Mode" is "True" in most MDM products. This is the required setting. When set correctly, nothing will be listed in the Restrictions profile, and the user will be able to toggle USB accessories on/off. Note: This control is called "Allow USB accessories while device is locked" in Apple Configurator, and the control logic is opposite to what is listed here. Ensure the MDM policy rule is set correctly (to disable USB accessory connections when the device is locked).