CVE-2026-43655

Received Received - Intake

Out-of-Bounds Read in iOS and macOS Tahoe

Publication date: 2026-05-11

Last updated on: 2026-05-11

Assigner: Apple Inc.

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. An app may be able to cause unexpected system termination or read kernel memory.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-11

Last Modified

2026-05-11

Generated

2026-07-11

AI Q&A

2026-05-12

EPSS Evaluated

2026-07-10

NVD

CVE-2026-43655

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	26.5
apple	ipados	26.5
apple	macos_tahoe	26.5
apple	tvos	26.5
apple	watchos	26.5

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read issue that was addressed by improving bounds checking in affected Apple operating systems. It could allow an application to read memory outside of its intended boundaries.

Specifically, an app may be able to cause unexpected system termination or read kernel memory, which is memory reserved for the core of the operating system.

Impact Analysis

This vulnerability can impact you by allowing an application to cause your system to unexpectedly terminate (crash) or potentially read sensitive kernel memory.

Reading kernel memory could expose sensitive information or lead to further exploitation of the system.

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices to the fixed versions: iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, and watchOS 26.5.

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