CVE-2026-43658

Modified Modified - Updated After Analysis

Memory Corruption in Safari Leading to Crash

Publication date: 2026-05-11

Last updated on: 2026-06-30

Assigner: Apple Inc.

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-11

Last Modified

2026-06-30

Generated

2026-07-11

AI Q&A

2026-05-12

EPSS Evaluated

2026-07-10

NVD

CVE-2026-43658

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	26.5
apple	ipad_os	26.5
apple	macos_tahoe	26.5
apple	tv_os	26.5
apple	vision_os	26.5
apple	watch_os	26.5

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-120	The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper memory handling when processing maliciously crafted web content in Safari. It can cause Safari to crash unexpectedly.

Impact Analysis

The vulnerability can lead to an unexpected crash of the Safari browser when visiting maliciously crafted web content, potentially disrupting user activity and causing loss of data or service interruptions.

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices to the fixed versions of the operating systems: iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, or watchOS 26.5.

Avoid processing or opening maliciously crafted web content in Safari until the update is applied, as this may lead to unexpected crashes.

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