CVE-2021-30939: Apple iPadOS

High severity, CVSS 7.8. EPSS: 4.1% chance of exploitation in the next 30 days.

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing a maliciously crafted image may lead to arbitrary code execution.

Affected products

• Apple iPadOS: before 15.2 (fixed in 15.2)
• Apple iPhone OS: before 15.2 (fixed in 15.2)
• Apple Mac OS X: from 10.15, before 10.15.7 (fixed in 10.15.7); version 10.15.7 only
• Apple macOS: from 11.0, before 11.6.2 (fixed in 11.6.2); from 12.0, before 12.1 (fixed in 12.1)
• Apple tvOS: before 15.2 (fixed in 15.2)
• Apple watchOS: before 8.3 (fixed in 8.3)

Published 2021-08-24. Last modified 2026-06-17.