CVE-2019-8756: Apple iCloud

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Catalina 10.15, iOS 13, iCloud for Windows 7.14, iCloud for Windows 10.7, tvOS 13, macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, watchOS 6, iTunes 12.10.1 for Windows. Multiple issues in libxml2.

Affected products

• Apple iCloud: before 7.14 (fixed in 7.14); from 10.0, before 10.7 (fixed in 10.7)
• Apple iTunes: before 12.10.1 (fixed in 12.10.1)
• Apple Mac OS X: before 10.15 (fixed in 10.15)
• Apple tvOS: before 13 (fixed in 13)
• Apple watchOS: before 6.0 (fixed in 6.0)

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