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.
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (3)
| Vendor | Product | Version |
|---|---|---|
| apple | macos | * ≥ 14.0 < 14.8.9 |
| apple | macos | * ≥ 15.0 < 15.7.9 |
| apple | macos | * ≥ 26.0 < 26.6.1 |
GitHub Security Advisory GHSA-cwph-f4w9-f4wq
An authentication issue was addressed with improved state management. This issue is fixed in...
References (7)
- https://support.apple.com/en-us/148170 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/148171 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/148172 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
Risk Scores
Top 48% most likely to be exploited
CISA Known Exploited
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.