STIGQter: STIG Summary: Apple macOS 15 (Sequoia) Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Apr 2026:

The macOS system must disable the guest account.

DISA Rule

SV-268510r1131221_rule

Vulnerability Number

V-268510

Group Title

SRG-OS-000364-GPOS-00151

Rule Version

APPL-15-002063

Severity

CAT II

CCI(s)

• CCI-001813 - Enforce access restrictions using organization-defined mechanisms.

Weight

10

Fix Recommendation

Configure the macOS system to disable the guest account by installing the "com.apple.MCX" configuration profile.

Check Contents

Verify the macOS system is configured to disable the guest account with the following command:

/usr/bin/osascript -l JavaScript << EOS
function run() {
let pref1 = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\
.objectForKey('DisableGuestAccount'))
let pref2 = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\
.objectForKey('EnableGuestAccount'))
if ( pref1 == true && pref2 == false ) {
return("true")
} else {
return("false")
}
}
EOS

If the result is not "true", this is a finding.

Vulnerability Number

V-268510

Documentable

False

Rule Version

APPL-15-002063

Severity Override Guidance

Verify the macOS system is configured to disable the guest account with the following command:

/usr/bin/osascript -l JavaScript << EOS
function run() {
let pref1 = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\
.objectForKey('DisableGuestAccount'))
let pref2 = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\
.objectForKey('EnableGuestAccount'))
if ( pref1 == true && pref2 == false ) {
return("true")
} else {
return("false")
}
}
EOS

If the result is not "true", this is a finding.

Check Content Reference

M

Target Key

5661