CVE-2021-30758: Apple iPhone OS

High severity, CVSS 8.8. EPSS: 1.7% chance of exploitation in the next 30 days.

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected products

• Apple iPhone OS: before 14.7 (fixed in 14.7)
• Apple macOS: before 11.5 (fixed in 11.5)
• Apple Safari: before 14.1.2 (fixed in 14.1.2)
• Apple tvOS: before 14.7 (fixed in 14.7)
• Apple watchOS: before 7.6 (fixed in 7.6)

Published 2021-09-08. Last modified 2026-06-17.