CVE-2026-65400
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.
Fix
Public exploits 3
- HORKimhab/CVE-2026-65400 PoC on GitHub
- acheong08/CVE-2026-65400 PoC on GitHub
- panchocosil/CVE-2026-65400-poc PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
CISA KEV required action · due 2026-08-21
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.
Added to the catalog 2026-08-18. CISA KEV
Patch, vendor advisory and mitigation references on NVD 5
- 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
- https://support.apple.com/en-us/149035 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/149042 Release Notes, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
In the news 1
Change history 1
- First seenCVSS 9.8 · in KEV · appleNVD modified 2026-10-23 21:10
Affected (CPE criteria) 1
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
References 9
- 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
- https://support.apple.com/en-us/149035 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/149042 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