What is CVE-2026-28853?

CVE-2026-28853 is a high-severity vulnerability in Apple macOS, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2026-10-20.

How severe is CVE-2026-28853?

High severity. CVSS v3 base score is 7.8 out of 10.

Privilege escalation in Apple macOS

CVE-2026-28853

The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to elevate privileges.

Vulnerability class: Privilege Escalation

Published 2026-10-20 · last modified 2026-10-20.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Apple macOS

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

support.apple.com/en-us/149042
support.apple.com/en-us/149043

Frequently asked questions

What is CVE-2026-28853?: CVE-2026-28853 is a high-severity vulnerability in Apple macOS, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2026-10-20.
How severe is CVE-2026-28853?: High severity. CVSS v3 base score is 7.8 out of 10.