CVE-2026-43734
Received Received - Intake

Use-After-Free in Safari with Malicious Web Content

Publication date: 2026-06-29

Last updated on: 2026-06-29

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 process crash.

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Meta Information

Published
2026-06-29
Last Modified
2026-06-29
Generated
2026-06-30
AI Q&A
2026-06-29
EPSS Evaluated
N/A
NVD
CVE-2026-43734

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apple safari 26.5.2
apple ios 26.5.2
apple ipad_os 26.5.2
apple macos_tahoe 26.5.2

Helpful Resources

Exploitability

CWE
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KEV
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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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

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Executive Summary

This vulnerability is a use-after-free issue in Apple software such as Safari, iOS, iPadOS, and macOS Tahoe. It occurs when the system improperly manages memory, leading to the possibility of accessing memory that has already been freed.

Processing maliciously crafted web content exploiting this issue may cause an unexpected process crash.

Impact Analysis

The primary impact of this vulnerability is that processing specially crafted web content can cause an unexpected crash of the affected process, potentially disrupting normal operation.

Mitigation Strategies

To mitigate this vulnerability, update affected Apple products to version 26.5.2 or later. This includes Safari, iOS, iPadOS, and macOS Tahoe.

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