---
id: "CVE-2026-86979"
kind: "vulnerability"
aliases: ["CVE-2026-86979"]
title: "Apple macOS: a privacy check flaw lets an app read sensitive user data"
severity: "medium"
cvss: 5.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple", "endpoints", "infrastructure", "macos"]
not_affected_if: ["already-on-golden-gate-27"]
published_at: "2026-10-20T01:17:29+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T04:12:32+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86979", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# Apple macOS: a privacy check flaw lets an app read sensitive user data

A privacy check in macOS Golden Gate 27 was missing or weak, so an app could reach sensitive user data it should not. Apple fixed it with improved checks.

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

## How to check

- `sw_vers -productVersion` on each Mac, to see whether it runs macOS Golden Gate 27 or an earlier release
- unknown for any further check, since the sources do not name the affected data paths

## Fix

- Update macOS to the Golden Gate 27 release or later, through Software Update
- unknown for a more specific build number, since the sources do not give one

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-86979

## From the sources

A privacy issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27. An app may be able to access sensitive user data.

---

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