CVE-2026-65400

Severity CVSS v4.0:

Pending analysis

Type:

CWE-287 Authentication Issues

Publication date:

06/08/2026

Last modified:

19/08/2026

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:apple:macos::::::::	14.0 (including)	14.8.9 (excluding)
cpe:2.3:o:apple:macos::::::::	15.0 (including)	15.7.9 (excluding)
cpe:2.3:o:apple:macos::::::::	26.0 (including)	26.6.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-65400

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools