---
id: CVE-2026-20617
title: A race condition was addressed with improved state handling
summary: >-
  A race condition was addressed with improved state handling. This issue is
  fixed in iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4,
  macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An app may be able
  to gain…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-362
  - CWE-362
vendor: apple
product: ipados
affected:
  - ipados < 26.3
  - iphone_os < 26.3
  - 'macos >= 14.0, < 14.8.4'
  - 'macos >= 26.0, < 26.3'
  - tvos < 26.3
  - visionos < 26.3
  - watchos < 26.3
patched:
  - ipados 26.3
  - iphone_os 26.3
  - macos 26.3
  - tvos 26.3
  - visionos 26.3
  - watchos 26.3
published: '2026-02-11'
updated: '2026-08-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20617'
references:
  - url: 'https://support.apple.com/en-us/126346'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/126348'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/126349'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/126350'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/126351'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/126352'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/126353'
    label: product-security@apple.com
tags:
  - nvd
epss: 0.00106
epssPercentile: 0.00999
ingestedAt: '2026-08-21T03:06:25.156Z'
---

## Overview

A race condition was addressed with improved state handling. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An app may be able to gain root privileges.

## Affected

- `ipados < 26.3`
- `iphone_os < 26.3`
- `macos >= 14.0, < 14.8.4`
- `macos >= 26.0, < 26.3`
- `tvos < 26.3`
- `visionos < 26.3`
- `watchos < 26.3`

## Remediation

Upgrade past the affected range:

- `ipados 26.3`
- `iphone_os 26.3`
- `macos 26.3`
- `tvos 26.3`
- `visionos 26.3`
- `watchos 26.3`