---
id: CVE-2026-84547
title: A memory corruption issue was addressed with improved input validation
summary: >-
  A memory corruption issue was addressed with improved input validation. This
  issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7.
  An attacker in physical proximity may be able to corrupt process memory.
severity: none
vendor: Apple
product: macOS
affected:
  - macOS < 15.8
  - macOS < 26.7
  - macOS < 27
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T00:50:32.556Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-84547'
references:
  - url: 'https://support.apple.com/en-us/149035'
  - url: 'https://support.apple.com/en-us/149042'
  - url: 'https://support.apple.com/en-us/149043'
tags:
  - cve.org
ingestedAt: '2026-10-20T01:49:42.604Z'
---

## Overview

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in physical proximity may be able to corrupt process memory.

## Affected

- `macOS < 15.8`
- `macOS < 26.7`
- `macOS < 27`

## Remediation

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