---
id: "CVE-2026-112576"
kind: "vulnerability"
aliases: ["CVE-2026-112576"]
title: "Apple iOS and macOS: copy-on-write memory flaw lets an app alter memory"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple", "infrastructure", "ios", "ipados", "macos", "tvos", "visionos", "watchos"]
not_affected_if: ["already-patched"]
published_at: "2026-10-26T21:17:51+00:00"
first_seen_at: "2026-10-26T21:20:28+00:00"
updated_at: "2026-10-26T21:27:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112576", "first_seen_at": "2026-10-26T21:20:28+00:00"}]
---

# Apple iOS and macOS: copy-on-write memory flaw lets an app alter memory

Apple reports a memory integrity issue in copy-on-write page handling across its operating systems. An app running on the device may be able to cause unexpected changes to copy-on-write memory.

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

## How to check

- Check the device version in Settings > General > About (iOS, iPadOS, visionOS, watchOS, tvOS) or run `sw_vers` on macOS
- unknown for any other check, the sources do not say

## Fix

- Update iOS and iPadOS to `26.7.2` or `27.2`
- Update macOS Tahoe to `26.7.2`, macOS Sequoia to `15.8.2`, or macOS Golden Gate to `27.2`
- Update tvOS, visionOS and watchOS to `27.2`

## Timeline

- 2026-10-26T21:20:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112576

## From the sources

A memory integrity issue was addressed with improved handling of copy-on-write pages. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, tvOS 27.2, visionOS 27.2, watchOS 27.2. An app may be able to cause unexpected changes to copy-on-write 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_