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High · 7.8 Known exploited CVE-2021-30869 EUVD-2021-17786

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big S…

Published Aug 24, 2021 · Updated Oct 21, 2025 · Assigned by apple

Description

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

Affected products

VendorProductAffectedFixed
Apple iOS and iPadOS unspecified – < 14.4 14.4
Apple macOS unspecified – < 11.2, unspecified – < 12.5, unspecified – < 2021 11.2

References