CVE-2018-4439: Apple iCloud

Medium severity, CVSS 6.5. EPSS: 1.9% chance of exploitation in the next 30 days.

A logic issue was addressed with improved validation. This issue affected versions prior to iOS 12.1.1, Safari 12.0.2, iTunes 12.9.2 for Windows, iCloud for Windows 7.9.

Affected products

• Apple iCloud: before 7.9 (fixed in 7.9)
• Apple iPhone OS: before 12.1.1 (fixed in 12.1.1)
• Apple iTunes: before 12.9.2 (fixed in 12.9.2)
• Apple Safari: before 12.0.2 (fixed in 12.0.2)

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