CVE-2026-28821

CoreServices: An app may be able to gain elevated privileges

CVE-2026-28821 is fixed in 3 products on 1 platform, first by Sequoia 15.7.5, released March 24, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

8.4

HIGH

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0022

12th percentile

A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Sequoia	15.7.5	Sequoia 15.7.5	Mar 24, 2026
Sonoma	14.8.5	Sonoma 14.8.5	Mar 24, 2026
Tahoe	26.4	Tahoe 26.4	Mar 24, 2026

Details

Published
March 24, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor advisory
https://support.apple.com/en-us/126794

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