What is CVE-2026-65356?

CVE-2026-65356 is a medium-severity vulnerability in Apple macOS, classified under Improper Access Control. CVSS score: 5.5/10. Published 2026-10-20.

How severe is CVE-2026-65356?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Apple macOS

CVE-2026-65356

An access issue was addressed with improved access controls. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access sensitive user data.

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

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-284 — Improper Access Control

References

support.apple.com/en-us/149035
support.apple.com/en-us/149042
support.apple.com/en-us/149043

Frequently asked questions

What is CVE-2026-65356?: CVE-2026-65356 is a medium-severity vulnerability in Apple macOS, classified under Improper Access Control. CVSS score: 5.5/10. Published 2026-10-20.
How severe is CVE-2026-65356?: Medium severity. CVSS v3 base score is 5.5 out of 10.