CVE-2026-43720

Analyzed Analyzed - Analysis Complete

Use-After-Free in Safari with Malicious Web Content

Publication date: 2026-06-29

Last updated on: 2026-06-30

Assigner: Apple Inc.

Description

A use-after-free issue was addressed with improved memory management. 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

Probability:
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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

2026-07-19

NVD

CVE-2026-43720

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-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a use-after-free issue in Safari and related Apple operating systems. It occurs when the software improperly manages memory, leading to a situation where it tries to use memory that has already been freed.

Specifically, processing maliciously crafted web content can trigger this flaw, which may cause Safari to crash unexpectedly.

Impact Analysis

The primary impact of this vulnerability is that it can cause Safari to crash unexpectedly when processing malicious web content.

While the description does not specify further consequences, unexpected crashes can disrupt user experience and potentially be leveraged by attackers for further exploits.

Compliance Impact

The vulnerability described is a use-after-free issue that may cause an unexpected Safari crash when processing maliciously crafted web content. There is no information provided about any impact on data confidentiality, integrity, or privacy that would directly affect compliance with standards such as GDPR or HIPAA.

Since the CVE description does not mention any data breach, unauthorized data access, or exposure of personal or sensitive information, it is not possible to determine from the provided information how this vulnerability affects compliance with common standards and regulations.

Mitigation Strategies

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

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