CVE-2026-65400

CRITICAL | Platform: macOS | Changelog

CVE Details

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.

CVSS 3.1 Score

Metric	Value
Base Score	9.8 (CRITICAL)
Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Weakness

CWE-287

References

Apple Security Advisory
NVD Entry
https://support.apple.com/en-us/148170 (Release Notes, Vendor Advisory)
https://support.apple.com/en-us/148171 (Release Notes, Vendor Advisory)
http://seclists.org/fulldisclosure/2026/Aug/36 (Mailing List)
http://seclists.org/fulldisclosure/2026/Aug/37 (Broken Link)
https://advisories.ncsc.nl/2026/ncsc-2026-0280.html (Third Party Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400 (US Government Resource)