CVE-2018-4223: Apple Tv

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in certain Apple products. iOS before 11.4 is affected. macOS before 10.13.5 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "Security" component. It allows local users to bypass intended restrictions on the reading of a persistent account identifier.

Affected products

• Apple Apple Tv: before 11.4 (fixed in 11.4)
• Apple iPhone OS: before 11.4 (fixed in 11.4)
• Apple Mac OS X: before 10.13.5 (fixed in 10.13.5)
• Apple watchOS: before 4.3.1 (fixed in 4.3.1)

Published 2018-06-08. Last modified 2026-06-17.