CVE-2021-30686: Apple iPadOS

Medium severity, CVSS 5.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-003 Catalina, macOS Big Sur 11.4, watchOS 7.5. Processing a maliciously crafted audio file may disclose restricted memory.

Affected products

• Apple iPadOS: before 14.6 (fixed in 14.6)
• Apple iPhone OS: before 14.6 (fixed in 14.6)
• Apple Mac OS X: from 10.15, up to and including 10.15.6; version 10.15.7 only
• Apple macOS: from 11.0, before 11.4 (fixed in 11.4)
• Apple tvOS: before 14.6 (fixed in 14.6)
• Apple watchOS: before 7.5 (fixed in 7.5)

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