---
id: CVE-2026-65400
title: An authentication issue was addressed with improved state management
summary: >-
  An authentication issue was addressed with improved state management. This
  issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma
  14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may
  be able to…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-287
vendor: apple
product: macos
affected:
  - 'macos >= 14.0, < 14.8.9'
  - 'macos >= 15.0, < 15.7.9'
  - 'macos >= 26.0, < 26.6.1'
patched:
  - macos 26.6.1
published: '2026-08-06'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T12:47:12.333'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-65400'
references:
  - url: 'https://support.apple.com/en-us/148170'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/148171'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/148172'
    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/149042'
    label: product-security@apple.com
  - url: 'http://seclists.org/fulldisclosure/2026/Aug/36'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://seclists.org/fulldisclosure/2026/Aug/37'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://advisories.ncsc.nl/2026/ncsc-2026-0280.html'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
  - cve.org
epss: 0.01219
epssPercentile: 0.67338
kev: true
kevDateAdded: '2026-08-18'
kevDueDate: '2026-08-21'
kevRansomware: false
exploited: true
exploits:
  github: 3
  githubRepos:
    - 'https://github.com/acheong08/CVE-2026-65400'
    - 'https://github.com/panchocosil/CVE-2026-65400-poc'
    - 'https://github.com/HORKimhab/CVE-2026-65400'
  checkedAt: '2026-09-25T08:21:07.698Z'
exploitAvailable: true
ssvc:
  exploitation: active
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-08-14T00:00:00+00:00'
ingestedAt: '2026-08-15T21:29:26.802Z'
---

## Overview

An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.

## Affected

- `macos >= 14.0, < 14.8.9`
- `macos >= 15.0, < 15.7.9`
- `macos >= 26.0, < 26.6.1`

## Remediation

Upgrade past the affected range:

- `macos 26.6.1`