CVE-2026-65400
Apple macOS Improper Authentication Vulnerability
Apple·macOS
- Added
- Aug 18, 2026
- Fix due
- Aug 21, 2026
- Ransomware
- Not known
- Published
- Aug 6, 2026
- Updated
- Oct 26, 2026
- First covered
- Aug 16, 2026
- Latest story
- 3 months ago
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 authenticate to Screen Sharing without valid credentials.
CWE-287Improper Authentication
Attack profile
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCISA required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected products
- Apple macOSbefore 14.8.9before 15.7.9before 26.6.1before 26.7