CVE-2026-65400

CriticalCVSS 9.8/10Known exploited (CISA KEV)Last modified Oct 24, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

No affected versions have been published.

Timeline

Published
Aug 6, 2026
Last modified
Oct 24, 2026
Added to CISA KEV
Aug 18, 2026
NVD status
Analyzed

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CVE-2026-65400: Critical severity, CVSS 9.8 | Vulnix