CVE-2018-4283: Apple Mac OS X

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

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue affected versions prior to macOS High Sierra 10.13.6.

Affected products

• Apple Mac OS X: before 10.13.6 (fixed in 10.13.6)

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