CVE-2026-43745

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Write in Safari with Malicious Web Content

Publication date: 2026-06-29

Last updated on: 2026-06-30

Assigner: Apple Inc.

Description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-29

Last Modified

2026-06-30

Generated

2026-07-20

AI Q&A

2026-06-29

EPSS Evaluated

2026-07-18

NVD

CVE-2026-43745

Affected Vendors & Products

Vendor	Product	Version / Range
apple	safari	to 26.5.2 (exc)
apple	ipados	to 26.5.2 (exc)
apple	iphone_os	to 26.5.2 (exc)
apple	macos	From 26.0 (inc) to 26.5.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds write issue in Safari and related Apple operating systems. It occurs when processing maliciously crafted web content, which can cause Safari to crash unexpectedly. The issue was addressed by improving input validation to prevent such out-of-bounds writes.

Impact Analysis

The primary impact of this vulnerability is that processing specially crafted web content may cause Safari to crash unexpectedly. This could disrupt normal browsing activities and potentially lead to denial of service conditions on affected devices.

Compliance Impact

The vulnerability involves an out-of-bounds write that may cause an unexpected Safari crash when processing maliciously crafted web content. It does not involve compromise of confidentiality or integrity of data.

Since the issue does not impact data confidentiality or integrity, it is unlikely to directly affect compliance with standards such as GDPR or HIPAA, which focus on protecting personal and sensitive data.

However, unexpected crashes could potentially affect availability, which might be relevant under certain regulatory requirements depending on the context of use.

Mitigation Strategies

To mitigate this vulnerability, update Safari, iOS, iPadOS, or macOS Tahoe to version 26.5.2 or later, where the issue has been fixed.

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