---
id: CVE-2026-86991
title: A buffer overflow was addressed with improved bounds checking
summary: >-
  A buffer overflow was addressed with improved bounds checking. 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, visionOS 27.2. Processing
  a m…
severity: none
vendor: Apple
product: iOS and iPadOS
affected:
  - ios_and_ipados < 26.7.2
  - ios_and_ipados < 27.2
  - macOS < 15.8.2
  - macOS < 26.7.2
  - macOS < 27.2
  - visionOS < 27.2
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T20:43:44.001Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-86991'
references:
  - url: 'https://support.apple.com/en-us/149227'
  - url: 'https://support.apple.com/en-us/149230'
  - url: 'https://support.apple.com/en-us/149521'
  - url: 'https://support.apple.com/en-us/149522'
  - url: 'https://support.apple.com/en-us/149523'
  - url: 'https://support.apple.com/en-us/149526'
tags:
  - cve.org
epss: 0.00262
epssPercentile: 0.17904
ingestedAt: '2026-10-27T16:11:59.091Z'
---

## Overview

A buffer overflow was addressed with improved bounds checking. 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, visionOS 27.2. Processing a maliciously crafted file may lead to unexpected process termination.

## Affected

- `ios_and_ipados < 26.7.2`
- `ios_and_ipados < 27.2`
- `macOS < 15.8.2`
- `macOS < 26.7.2`
- `macOS < 27.2`
- `visionOS < 27.2`

## Remediation

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