---
id: CVE-2026-86957
title: An out-of-bounds read was addressed with improved bounds checking
summary: >-
  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
  at…
severity: none
vendor: Apple
product: iOS and iPadOS
affected:
  - ios_and_ipados < 26.7
  - ios_and_ipados < 27
  - macOS < 15.8
  - macOS < 26.7
  - macOS < 27
  - tvOS < 27
  - visionOS < 27
  - watchOS < 27
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T00:50:55.409Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-86957'
references:
  - url: 'https://support.apple.com/en-us/149034'
  - url: 'https://support.apple.com/en-us/149035'
  - url: 'https://support.apple.com/en-us/149036'
  - url: 'https://support.apple.com/en-us/149037'
  - url: 'https://support.apple.com/en-us/149038'
  - url: 'https://support.apple.com/en-us/149041'
  - url: 'https://support.apple.com/en-us/149042'
  - url: 'https://support.apple.com/en-us/149043'
tags:
  - cve.org
ingestedAt: '2026-10-20T01:49:42.588Z'
---

## Overview

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.

## Affected

- `ios_and_ipados < 26.7`
- `ios_and_ipados < 27`
- `macOS < 15.8`
- `macOS < 26.7`
- `macOS < 27`
- `tvOS < 27`
- `visionOS < 27`
- `watchOS < 27`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.