CVE-2021-1816: Apple iPadOS

High severity, CVSS 7.8. EPSS: 1.6% chance of exploitation in the next 30 days.

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. A malicious application may be able to execute arbitrary code with kernel privileges.

Affected products

• Apple iPadOS: before 14.5 (fixed in 14.5)
• Apple iPhone OS: before 14.5 (fixed in 14.5)
• 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.