CVE-2026-84613
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Out-of-Bounds Write in Apple iOS and macOS

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 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker in radio range may be able to cause unexpected system termination.

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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
CVE-2026-84613
EUVD
EUVD-2026-104708

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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 radio range could exploit this to cause unexpected system termination on affected Apple devices.

Detection Guidance

This vulnerability is addressed in specific Apple OS updates. Detection involves checking installed OS versions against the patched releases: iOS 26.7/iPadOS 26.7, iOS 27/iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, or watchOS 27. Use system update commands like 'softwareupdate --list' on macOS or 'Settings > General > Software Update' on iOS/iPadOS.

Impact Analysis

The vulnerability may allow an attacker in close proximity to crash your device unexpectedly. This could lead to loss of unsaved data or temporary disruption of device functionality.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The description only mentions potential system termination due to an out-of-bounds write issue.

Mitigation Strategies

Immediately update affected Apple devices to the latest OS versions listed: iOS 26.7/iPadOS 26.7, iOS 27/iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, or watchOS 27. Disable Bluetooth if not in use and avoid connecting to untrusted networks or devices until updates are applied.

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