CVE-2025-43421
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-04

Last updated on: 2026-04-02

Assigner: Apple Inc.

Description
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
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Meta Information
Published
2025-11-04
Last Modified
2026-04-02
Generated
2026-06-16
AI Q&A
2025-11-04
EPSS Evaluated
2026-06-14
NVD
CVE-2025-43421
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
apple safari to 26.1 (exc)
apple ipados to 26.1 (exc)
apple iphone_os to 26.1 (exc)
apple visionos to 26.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability involves multiple issues related to array allocation sinking that were addressed by disabling this feature. It could be triggered by processing maliciously crafted web content, which may cause an unexpected process crash.

Impact Analysis

The vulnerability may cause an unexpected process crash when processing malicious web content, potentially disrupting normal operation of affected devices or applications.

Mitigation Strategies

Update your devices to iOS 26.1, iPadOS 26.1, Safari 26.1, or visionOS 26.1 where this issue is fixed to prevent processing maliciously crafted web content that may cause unexpected process crashes.

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