---
id: CVE-2026-86963
title: A denial-of-service issue was addressed with improved input validation
summary: >-
  A denial-of-service issue was addressed with improved input validation. This
  issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27. An attacker
  in a privileged network position may be able to cause a denial-of-service.
severity: none
vendor: Apple
product: iOS and iPadOS
affected:
  - ios_and_ipados < 26.7
  - ios_and_ipados < 27
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T00:50:56.479Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-86963'
references:
  - url: 'https://support.apple.com/en-us/149034'
  - url: 'https://support.apple.com/en-us/149041'
tags:
  - cve.org
ingestedAt: '2026-10-20T01:49:42.585Z'
---

## Overview

A denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27. An attacker in a privileged network position may be able to cause a denial-of-service.

## Affected

- `ios_and_ipados < 26.7`
- `ios_and_ipados < 27`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.