Vulnerability record · CVE-2026-28821 · published 25 March 2026

CVE-2026-28821: Apple macos improper input validation vulnerability

Apple · Macos

A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to gain elevated privileges.

8.4 CVSS 3.1 High EPSS 0.19% · top 92.1% CWE-20 · Improper input validation

8.4CVSS 3.1 base score

0.19%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Macos Apple

References

Link	Tags
https://support.apple.com/en-us/126794	Release NotesVendor Advisory
https://support.apple.com/en-us/126795	Release NotesVendor Advisory
https://support.apple.com/en-us/126796	Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-28821), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.