CVE-2026-86872
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Unexpected Behavior in Safari with Malicious Web Content

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Apple Inc.

Description
A logic issue was addressed with improved state management. This issue is fixed in Safari 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to unexpected behavior.

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Meta Information

Published
2026-10-20
Last Modified
2026-10-20
Generated
2026-11-09
AI Q&A
2026-10-20
EPSS Evaluated
2026-11-08
NVD
CVE-2026-86872
EUVD
EUVD-2026-104711

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
Apple Safari 0
Apple visionOS 0
Apple watchOS 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-843 The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

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Executive Summary

A logic issue in Safari 27, visionOS 27, and watchOS 27 allows processing maliciously crafted web content to lead to unexpected behavior due to improper state management.

Detection Guidance

This vulnerability is specific to Safari 27, visionOS 27, and watchOS 27. Detection involves checking the installed versions of these software. For Safari, verify the version via About Safari in the application menu. For visionOS and watchOS, check Settings > General > About. Ensure all devices are updated to the patched versions mentioned in the advisory.

Impact Analysis

This vulnerability could allow attackers to manipulate web content in a way that causes unexpected behavior in affected devices, potentially leading to crashes or other unintended actions.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves unexpected behavior due to maliciously crafted web content, but no details are given about data exposure or privacy implications that would affect such regulations.

Mitigation Strategies

Update Safari to version 27, visionOS to version 27, and watchOS to version 27 or later to address the logic issue in web content processing.

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