---
id: CVE-2026-84595
title: An out-of-bounds write issue was addressed with improved bounds checking
summary: >-
  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, macOS Sequoia
  15.8.2, macOS Tahoe 26.7.2, visionOS 27. An app may be able to cause
  unexpected sy…
severity: none
vendor: Apple
product: iOS and iPadOS
affected:
  - ios_and_ipados < 27
  - macOS < 15.8.2
  - macOS < 26.7.2
  - macOS < 27
  - visionOS < 27
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T20:33:53.548Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-84595'
references:
  - url: 'https://support.apple.com/en-us/149034'
  - url: 'https://support.apple.com/en-us/149035'
  - url: 'https://support.apple.com/en-us/149038'
  - url: 'https://support.apple.com/en-us/149522'
  - url: 'https://support.apple.com/en-us/149523'
tags:
  - cve.org
ingestedAt: '2026-10-26T20:39:42.565Z'
epss: 0.00221
epssPercentile: 0.12543
---

## Overview

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, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, visionOS 27. An app may be able to cause unexpected system termination.

## Affected

- `ios_and_ipados < 27`
- `macOS < 15.8.2`
- `macOS < 26.7.2`
- `macOS < 27`
- `visionOS < 27`

## Remediation

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