CVE-2026-86953
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Out-of-Bounds Write in iOS and iPadOS

Vulnerability report for CVE-2026-86953, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Apple Inc.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. An attacker in physical proximity may be able to cause a denial-of-service.

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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
2026-11-07
NVD
EUVD

Affected Vendors & Products

Showing 5 associated CPEs

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.

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Executive Summary

This is an out-of-bounds write vulnerability caused by insufficient bounds checking. An attacker within physical proximity could exploit it to trigger a denial-of-service condition on affected devices.

Detection Guidance

This vulnerability is specific to Apple devices and requires physical proximity for exploitation. Detection involves checking device software versions rather than running commands. Ensure all Apple devices are updated to iOS 27, iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, or watchOS 27 to mitigate the issue.

Impact Analysis

The vulnerability may allow an attacker nearby to crash your device, causing temporary unavailability or requiring a reboot. It does not appear to enable data theft or code execution.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The issue involves an out-of-bounds write that may cause a denial-of-service, but no details are given about data exposure or privacy implications.

Mitigation Strategies

Update affected Apple devices to iOS 27, iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, or watchOS 27 to address the out-of-bounds write issue.

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