STIGQter STIGQter: STIG Summary: Apple iOS/iPadOS 26 Security Technical Implementation Guide Version: 1 Release: 3 Benchmark Date: 13 May 2026:

Apple iOS/iPadOS 26 must not allow managed apps to write contacts to unmanaged contacts accounts.

DISA Rule

SV-278804r1150659_rule

Vulnerability Number

V-278804

Group Title

PP-MDF-993300

Rule Version

AIOS-26-012300

Severity

CAT III

CCI(s)

Weight

10

Fix Recommendation

Install a configuration profile to prevent managed apps from writing contacts to unmanaged contacts accounts.

Configuration Profile Key: allowManagedToWriteUnmanagedContacts

This payload can only be installed via an MDM.

Check Contents

Review configuration settings to confirm "Allow managed apps to write contacts to unmanaged contacts accounts" is disabled.

This check procedure is performed on both the Apple iOS/iPadOS management tool and the Apple iOS/iPadOS 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/iPadOS management tool, verify "Allow managed apps to write contacts to unmanaged contacts accounts" is unchecked.

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "VPN & Device Management".
4. Tap the Configuration Profile from the iOS/iPadOS management tool containing the restrictions policy.
5. Tap "Restrictions".
6. Verify "Allow managed apps to write contacts to unmanaged contacts accounts" is not listed.

If "Allow managed apps to write contacts to unmanaged contacts accounts" is checked in the iOS/iPadOS management tool or the restrictions policy on the iPhone and iPad lists "Allow managed apps to write contacts to unmanaged contacts accounts", this is a finding.

Vulnerability Number

V-278804

Documentable

False

Rule Version

AIOS-26-012300

Severity Override Guidance

Review configuration settings to confirm "Allow managed apps to write contacts to unmanaged contacts accounts" is disabled.

This check procedure is performed on both the Apple iOS/iPadOS management tool and the Apple iOS/iPadOS 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/iPadOS management tool, verify "Allow managed apps to write contacts to unmanaged contacts accounts" is unchecked.

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "VPN & Device Management".
4. Tap the Configuration Profile from the iOS/iPadOS management tool containing the restrictions policy.
5. Tap "Restrictions".
6. Verify "Allow managed apps to write contacts to unmanaged contacts accounts" is not listed.

If "Allow managed apps to write contacts to unmanaged contacts accounts" is checked in the iOS/iPadOS management tool or the restrictions policy on the iPhone and iPad lists "Allow managed apps to write contacts to unmanaged contacts accounts", this is a finding.

Check Content Reference

M

Target Key

5723