CVE-2018-4178: Apple Mac OS X

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A permissions issue existed in which execute permission was incorrectly granted. This issue was addressed with improved permission validation. This issue affected versions prior to macOS High Sierra 10.13.4.

Affected products

• Apple Mac OS X: before 10.13.4 (fixed in 10.13.4)

Published 2019-04-03. Last modified 2026-06-17.