---
id: "CVE-2026-113940"
kind: "vulnerability"
aliases: ["CVE-2026-113940"]
title: "macOS: out-of-bounds read lets an app crash the system"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple-devices", "infrastructure", "macos"]
not_affected_if: ["already-on-macos-golden-gate-27.2"]
published_at: "2026-10-26T21:18:10+00:00"
first_seen_at: "2026-10-26T21:20:31+00:00"
updated_at: "2026-10-26T21:21:44+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113940", "first_seen_at": "2026-10-26T21:20:31+00:00"}]
---

# macOS: out-of-bounds read lets an app crash the system

An out-of-bounds read in macOS could let an app trigger an unexpected system termination. Apple fixed it with improved bounds checking in macOS Golden Gate 27.2.

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

## How to check

- unknown

## Fix

- Update macOS to Golden Gate 27.2 or later (version string as given by the advisory; confirm in System Settings > General > Software Update).

## Timeline

- 2026-10-26T21:20:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113940

## From the sources

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27.2. An app may be able to cause unexpected system termination.

---

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