---
id: "CVE-2026-86940"
kind: "vulnerability"
aliases: ["CVE-2026-86940"]
title: "Apple macOS: app can disclose kernel memory, fixed in Golden Gate 27"
severity: "medium"
cvss: 5.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple-devices", "endpoints", "infrastructure", "macos"]
not_affected_if: ["macos-golden-gate-27-or-later"]
published_at: "2026-10-20T01:17:28+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T04:12:36+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86940", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# Apple macOS: app can disclose kernel memory, fixed in Golden Gate 27

A local app on macOS can read kernel memory it should not be able to see. Apple fixed it in macOS Golden Gate 27 by removing the vulnerable code.

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

## How to check

- Run `sw_vers -productVersion` on each Mac and compare against the fixed release the advisory names
- unknown whether the sources list a specific affected build range

## Fix

- Update macOS to Golden Gate 27 or later via System Settings > General > Software Update

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-86940

## From the sources

This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Golden Gate 27. An app may be able to disclose 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_