CVE-2026-43666

published 2026-05-11

CVE-2026-43666: An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS…

medium 6.2 CVSS 3.1

AV L AC L PR N UI N S U C N I N A H

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

Affected

15 ranges

Vendor	Product	Version range	Fixed in
apple	ios_and_ipados	< 18.7.9	18.7.9
apple	ios_and_ipados	< 26.5	26.5
apple	ipados	< 18.7.9	18.7.9
apple	ipados	>= 26.0 < 26.5	26.5
apple	iphone_os	< 18.7.9	18.7.9
apple	iphone_os	>= 26.0 < 26.5	26.5
apple	macos	< 14.8.7	14.8.7
apple	macos	< 15.7.7	15.7.7
apple	macos	< 26.5	26.5
apple	macos	>= 14.0 < 14.8.7	14.8.7
apple	macos	>= 15.0 < 15.7.7	15.7.7
apple	macos	>= 26.0 < 26.5	26.5
apple	tvos	< 26.5	26.5
apple	visionos	< 26.5	26.5
apple	watchos	< 26.5	26.5

CWE-787