---
id: "CVE-2026-84547"
kind: "vulnerability"
aliases: ["CVE-2026-84547"]
title: "macOS: memory corruption in input handling lets nearby attacker corrupt process memory"
severity: "low"
cvss: 3.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple-devices", "infrastructure", "macos"]
not_affected_if: ["patched-macos"]
published_at: "2026-10-20T01:17:22+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T04:45:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84547", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# macOS: memory corruption in input handling lets nearby attacker corrupt process memory

Apple fixed a memory corruption flaw in macOS that was addressed with improved input validation. An attacker with physical proximity may be able to corrupt process memory.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- Update macOS to `27` (Golden Gate), `15.8` (Sequoia), or `26.7` (Tahoe), the versions named in the advisory.

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84547

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_