---
id: "CVE-2026-84496"
kind: "vulnerability"
aliases: ["CVE-2026-84496"]
title: "macOS: crafted disk image can crash the system or corrupt kernel memory"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["endpoints", "infrastructure", "macos"]
not_affected_if: ["macos-patched", "no-untrusted-disk-images"]
published_at: "2026-10-26T21:19:59+00:00"
first_seen_at: "2026-10-26T21:55:21+00:00"
updated_at: "2026-10-26T21:57:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84496", "first_seen_at": "2026-10-26T21:55:21+00:00"}]
---

# macOS: crafted disk image can crash the system or corrupt kernel memory

A malicious disk image mounted on macOS can trigger an out-of-bounds write in the system. The result is an unexpected system termination or corruption of kernel memory.

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

## How to check

- Check the macOS version with `sw_vers -productVersion`; versions before `27.2` on Golden Gate or before `26.7.2` on Tahoe are in scope.

## Fix

- Update macOS to `27.2` (macOS Golden Gate) or `26.7.2` (macOS Tahoe) or later.

## Timeline

- 2026-10-26T21:55:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84496

## From the sources

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27.2, macOS Tahoe 26.7.2. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel 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_