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VULNERABILITIES

CVE-2026-65400 Details

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.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://advisories.ncsc.nl/2026/ncsc-2026-0280.html CISA-ADPThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400 CISA-ADPUS Government Resource
http://seclists.org/fulldisclosure/2026/Aug/36 CVEMailing List
http://seclists.org/fulldisclosure/2026/Aug/37 CVEBroken Link
https://support.apple.com/en-us/148170 [email protected]Release NotesVendor Advisory

see all 9 references

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
Apple macOS Improper Authentication VulnerabilityAug 18, 2026Aug 21, 2026Apply 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.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-287Improper AuthenticationCISA-ADP

Affected Products

ProductVersions
apple macos
>= 14.0, < 14.8.9
>= 15.0, < 15.7.9
>= 26.0, < 26.6.1

CPE

  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

15 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-65400
NVD Published Date:
Aug 6, 2026
NVD Last Modified:
Sep 15, 2026
Source:
[email protected]
CVE-2026-65400 Details - Not Deferred