---
id: CVE-2026-65405
title: A memory initialization issue was addressed with improved memory handling
summary: >-
  A memory initialization issue was addressed with improved memory handling.
  This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS
  Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27,
  watchOS 2…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-457
vendor: apple
product: ipados
affected:
  - ipados < 26.7
  - iphone_os < 26.7
  - 'macos >= 15.0, < 15.8'
  - 'macos >= 26.0, < 26.7'
  - tvos < 27.0
  - visionos < 27.0
  - watchos < 27.0
patched:
  - ipados 26.7
  - iphone_os 26.7
  - macos 26.7
  - tvos 27.0
  - visionos 27.0
  - watchos 27.0
published: '2026-09-14'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T18:42:55.293'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-65405'
references:
  - url: 'https://support.apple.com/en-us/149034'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149035'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149036'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149037'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149038'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149041'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149042'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149043'
    label: product-security@apple.com
tags:
  - nvd
  - cve.org
epss: 0.00163
epssPercentile: 0.05925
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T18:03:30.431901Z'
ingestedAt: '2026-09-14T21:15:17.469Z'
---

## Overview

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to determine kernel memory layout.

## Affected

- `ipados < 26.7`
- `iphone_os < 26.7`
- `macos >= 15.0, < 15.8`
- `macos >= 26.0, < 26.7`
- `tvos < 27.0`
- `visionos < 27.0`
- `watchos < 27.0`

## Remediation

Upgrade past the affected range:

- `ipados 26.7`
- `iphone_os 26.7`
- `macos 26.7`
- `tvos 27.0`
- `visionos 27.0`
- `watchos 27.0`