CVE-2026-86957
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Out-of-Bounds Read in Apple iOS and macOS

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Apple Inc.

Description
An out-of-bounds read 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 wireless proximity 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-2026-86957
EUVD
EUVD-2026-104732

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This is an out-of-bounds read vulnerability caused by insufficient bounds checking. An attacker within wireless range could exploit this to cause an unexpected system crash or termination on affected devices.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires checking the installed version against the patched releases. No direct detection commands are provided in the context. Monitor for unexpected system termination or crashes as potential indicators.

Impact Analysis

The impact includes unexpected system crashes or freezes on devices running vulnerable versions of iOS, iPadOS, macOS, tvOS, visionOS, or watchOS. This could lead to data loss or disruption of services.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves an out-of-bounds read issue that could cause unexpected system termination, but no data exposure or privacy implications are mentioned.

Mitigation Strategies

Update affected Apple devices to the latest patched versions: iOS 26.7 or later, iPadOS 26.7 or later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, or watchOS 27.

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