CVE-2020-3864: Apple iCloud

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A logic issue was addressed with improved validation. This issue is fixed in iCloud for Windows 7.17, iTunes 12.10.4 for Windows, iCloud for Windows 10.9.2, tvOS 13.3.1, Safari 13.0.5, iOS 13.3.1 and iPadOS 13.3.1. A DOM object context may not have had a unique security origin.

Affected products

• Apple iCloud: before 7.17 (fixed in 7.17); from 10.0, before 10.9.2 (fixed in 10.9.2)
• Apple iPadOS: before 13.3.1 (fixed in 13.3.1)
• Apple iPhone OS: before 13.3.1 (fixed in 13.3.1)
• Apple iTunes: before 12.10.4 (fixed in 12.10.4)
• Apple Safari: before 13.0.5 (fixed in 13.0.5)
• Apple tvOS: before 13.3.1 (fixed in 13.3.1)
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Workstation: version 7.0 only

Published 2020-10-27. Last modified 2026-06-17.