CVE-2019-8504: Apple iPhone OS

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

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4. A local user may be able to read kernel memory.

Affected products

• Apple iPhone OS: before 12.2 (fixed in 12.2)
• Apple Mac OS X: before 10.14.4 (fixed in 10.14.4)

Published 2019-12-18. Last modified 2026-06-17.