CVE-2021-30836: Apple iPadOS

Medium severity, CVSS 5.5. EPSS: 1.1% chance of exploitation in the next 30 days.

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may disclose restricted memory.

Affected products

• Apple iPadOS: before 14.8 (fixed in 14.8)
• Apple iPhone OS: before 14.8 (fixed in 14.8)
• Apple macOS: before 12.0.1 (fixed in 12.0.1)
• Apple Safari: before 15.0.0 (fixed in 15.0.0)
• Apple tvOS: before 15.0 (fixed in 15.0)
• Apple watchOS: before 8.0 (fixed in 8.0)

Published 2021-10-28. Last modified 2026-06-17.