What is CVE-2026-86928?

CVE-2026-86928 is a medium-severity vulnerability in Apple macOS, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-10-20.

How severe is CVE-2026-86928?

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

Path Traversal in Apple macOS

CVE-2026-86928

A path handling issue was addressed with improved validation. This issue is fixed in macOS Golden Gate 27. An app may be able to access protected user data.

Vulnerability class: Path Traversal (Directory Traversal)

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-22 — Path Traversal

References

support.apple.com/en-us/149035

Frequently asked questions

What is CVE-2026-86928?: CVE-2026-86928 is a medium-severity vulnerability in Apple macOS, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-10-20.
How severe is CVE-2026-86928?: Medium severity. CVSS v3 base score is 5.5 out of 10.