CVE-2021-1846: Apple iPadOS

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

Processing a maliciously crafted audio file may disclose restricted memory. This issue is fixed in Security Update 2021-002 Catalina, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. An out-of-bounds read was addressed with improved input validation.

Affected products

• Apple iPadOS: before 14.5 (fixed in 14.5)
• Apple iPhone OS: before 14.5 (fixed in 14.5)
• Apple Mac OS X: version 10.15 only; version 10.15.1 only; version 10.15.2 only; version 10.15.3 only; version 10.15.4 only; version 10.15.5 only; …
• 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.