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 display notifications (calendar information) when the device is locked.

DISA Rule

SV-278759r1150524_rule

Vulnerability Number

V-278759

Group Title

PP-MDF-333080

Rule Version

AIOS-26-007600

Severity

CAT II

CCI(s)

• CCI-000060 - Conceal, via the device lock, information previously visible on the display with a publicly viewable image.

Weight

10

Fix Recommendation

Install a configuration profile to disable "Show Today view in Lock screen" from the device Lock screen.

Configuration Profile Key: allowLockScreenTodayView

Check Contents

Review configuration settings to confirm "Show Today view in Lock screen" is disabled.

This check procedure is performed on both the Apple iOS/iPadOS management tool and the iPhone and iPad.

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 Apple iOS/iPadOS management tool, verify "Show Today view in Lock screen" is unchecked.

Alternatively, verify the text "<key>allowLockScreenTodayView</key><false/>" appears in the configuration profile (.mobileconfig file).

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles & Device Management" or Profiles".
4. Tap the Configuration Profile from the iOS management tool containing the management policy.
5. Tap "Restrictions".
6. Verify "Today view on lock screen not allowed" is present.

If "Show Today view in Lock screen" is checked in the Apple iOS/iPadOS management tool, "<key>allowLockScreenTodayView</key><true/>" appears in the configuration profile, or the restrictions policy on the iPhone and iPad does not list "Today view on lock screen not allowed", this is a finding.

Vulnerability Number

V-278759

Documentable

False

Rule Version

AIOS-26-007600

Severity Override Guidance

Review configuration settings to confirm "Show Today view in Lock screen" is disabled.

This check procedure is performed on both the Apple iOS/iPadOS management tool and the iPhone and iPad.

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 Apple iOS/iPadOS management tool, verify "Show Today view in Lock screen" is unchecked.

Alternatively, verify the text "<key>allowLockScreenTodayView</key><false/>" appears in the configuration profile (.mobileconfig file).

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles & Device Management" or Profiles".
4. Tap the Configuration Profile from the iOS management tool containing the management policy.
5. Tap "Restrictions".
6. Verify "Today view on lock screen not allowed" is present.

If "Show Today view in Lock screen" is checked in the Apple iOS/iPadOS management tool, "<key>allowLockScreenTodayView</key><true/>" appears in the configuration profile, or the restrictions policy on the iPhone and iPad does not list "Today view on lock screen not allowed", this is a finding.

Check Content Reference

M

Target Key

5723