Vulnerability in Apple macOS

CVE-2026-86909

A logic issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27. An app may be able to bypass Gatekeeper checks.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (4.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-86909: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-86909?
CVE-2026-86909 is a medium-severity vulnerability in Apple macOS, classified under Protection Mechanism Failure. CVSS score: 4.4/10. Published 2026-09-14.
How severe is CVE-2026-86909?
Medium severity. CVSS v3 base score is 4.4 out of 10.