CVE-2020-9951: Apple iCloud

High severity, CVSS 8.8. EPSS: 2.3% chance of exploitation in the next 30 days.

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected products

• Apple iCloud: before 11.5 (fixed in 11.5)
• Apple iPadOS: before 14.0 (fixed in 14.0)
• Apple iPhone OS: before 14.0 (fixed in 14.0)
• Apple iTunes: before 12.10.9 (fixed in 12.10.9)
• Apple Safari: before 14.0 (fixed in 14.0)
• Apple tvOS: before 14.0 (fixed in 14.0)
• Apple watchOS: before 7.0 (fixed in 7.0)
• Debian Debian Linux: version 10.0 only
• Webkit Webkitgtk+: up to and including 2.30.3

Published 2020-10-16. Last modified 2026-06-17.