---
id: CVE-2026-65408
title: An integer overflow was addressed with improved input validation
summary: >-
  An integer overflow was addressed with improved input validation. 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. An app may be able to cause
  unexpected s…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-190
vendor: apple
product: ipados
affected:
  - ipados < 26.7
  - iphone_os < 26.7
  - 'macos >= 15.0, < 15.8'
  - 'macos >= 26.0, < 26.7'
patched:
  - ipados 26.7
  - iphone_os 26.7
  - macos 26.7
published: '2026-09-14'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T18:40:17.750'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-65408'
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/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: 0.00158
epssPercentile: 0.04145
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T15:58:15.518775Z'
ingestedAt: '2026-09-14T21:15:17.487Z'
---

## Overview

An integer overflow was addressed with improved input validation. 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. An app may be able to cause unexpected system termination.

## Affected

- `ipados < 26.7`
- `iphone_os < 26.7`
- `macos >= 15.0, < 15.8`
- `macos >= 26.0, < 26.7`

## Remediation

Upgrade past the affected range:

- `ipados 26.7`
- `iphone_os 26.7`
- `macos 26.7`