Memory Corruption in Safari via Malicious Web Content

Publication date: 2026-05-11

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 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:
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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-2026-28947

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
apple	safari	*

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

Mitigation Strategies

The vulnerability is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, and watchOS 26.5. To mitigate this vulnerability, you should update your Apple devices to these versions or later.

Executive Summary

This vulnerability is a use-after-free issue related to memory management. It occurs when Safari processes maliciously crafted web content, which can cause an unexpected crash of the Safari browser.

Impact Analysis

The impact of this vulnerability is that processing specially crafted web content may cause Safari to crash unexpectedly. This could disrupt your browsing experience and potentially be exploited to cause denial of service.

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