Vulnerability Report

CVE-2026-65400

CISA KEV Active

Title: macOS Screen Sharing Authentication Bypass

Auth Bypass

Proof Of Concept

PoC Available for CVE-2026-65400

CWE Category NVD-CWE-noinfo

Published Date Aug 06, 2026

Modified Date Aug 19, 2026

Exploit Status Available

Score 9.8 CVSS v

Exploit Probability (EPSS)

9.91%

Vulnerability Summary

CVE-2026-65400: An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.

Impacted Vendors

apple 1

Reference Links

https://support.apple.com/en-us/148170 https://support.apple.com/en-us/148171 https://support.apple.com/en-us/148172

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-65400 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/HORKimhab/CVE-2026-65400

View Code

GitHub https://github.com/acheong08/CVE-2026-65400

View Code

GitHub https://github.com/panchocosil/CVE-2026-65400-poc

View Code

August 19, 2026 MODIFIED