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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:macos::::::::

History

No history.

Information

Published : 2026-08-06 22:18

Updated : 2026-09-15 12:47

NVD link : CVE-2026-65400

Mitre link : CVE-2026-65400

CVE.ORG link : CVE-2026-65400

JSON object : View

Products Affected

apple

macos

CWE

CWE-287

Improper Authentication

{"id": "CVE-2026-65400", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-65400", "role": "CISA Coordinator", "options": [{"exploitation": "active"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-14T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "product-security@apple.com", "affectedData": [{"vendor": "Apple", "product": "macOS", "versions": [{"status": "affected", "version": "0", "lessThan": "14.8.9", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "15.7.9", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "26.6.1", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "26.7", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "27", "versionType": "custom"}]}]}], "published": "2026-08-06T22:18:14.533", "references": [{"url": "https://support.apple.com/en-us/148170", "tags": ["Release Notes", "Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/en-us/148171", "tags": ["Release Notes", "Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/en-us/148172", "tags": ["Release Notes", "Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/en-us/149035", "tags": ["Release Notes", "Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/en-us/149042", "tags": ["Release Notes", "Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "http://seclists.org/fulldisclosure/2026/Aug/36", "tags": ["Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://seclists.org/fulldisclosure/2026/Aug/37", "tags": ["Broken Link"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://advisories.ncsc.nl/2026/ncsc-2026-0280.html", "tags": ["Third Party Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400", "tags": ["US Government Resource"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-287"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-15T12:47:12.333", "cisaActionDue": "2026-08-21", "cisaExploitAdd": "2026-08-18", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "343D2ED2-0928-434D-9D9E-968A6365DDFE", "versionEndExcluding": "14.8.9", "versionStartIncluding": "14.0"}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0FAFB32-637E-4BE3-8A5D-ABB145B1E28B", "versionEndExcluding": "15.7.9", "versionStartIncluding": "15.0"}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "31BB841D-2EFD-42A5-9387-685A27D3094E", "versionEndExcluding": "26.6.1", "versionStartIncluding": "26.0"}], "operator": "OR"}]}], "sourceIdentifier": "product-security@apple.com", "cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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.", "cisaVulnerabilityName": "Apple macOS Improper Authentication Vulnerability"}