CVE-2021-1770: Apple iPadOS

Critical severity, CVSS 9.8. EPSS: 2.8% chance of exploitation in the next 30 days.

A buffer overflow may result in arbitrary code execution. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. A logic issue was addressed with improved state management.

Affected products

• Apple iPadOS: before 14.5 (fixed in 14.5)
• Apple iPhone OS: before 14.5 (fixed in 14.5)
• Apple macOS: from 11.0, before 11.3 (fixed in 11.3)
• Apple tvOS: before 14.5 (fixed in 14.5)
• Apple watchOS: before 7.4 (fixed in 7.4)

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