CVE-2026-65400

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 1.72%
EPSS Percentile: 76.88%
CISA KEV: YES — Known Exploited Vulnerability

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: product-security@apple.com
Published: 07-Aug-2026 05:18
Last Modified: 15-Sep-2026 19:47
EPSS Date: 2026-10-11
CWE: CWE-287

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

CISA KEV Details

Date Added: 2026-08-18
Remediation Due: 2026-08-21
Known Ransomware Campaign Use: Unknown
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.
Notes: https://support.apple.com/en-us/148170; https://support.apple.com/en-us/148171; https://support.apple.com/en-us/148172 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-65400

Affected Products / Versions

apple / macos
Version / affected range: * · from (inclusive) 14.0 · before (exclusive) 14.8.9
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple / macos
Version / affected range: * · from (inclusive) 15.0 · before (exclusive) 15.7.9
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple / macos
Version / affected range: * · from (inclusive) 26.0 · before (exclusive) 26.6.1
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 19:45
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (3)

CVE-2026-65400 Recorded Future Identifies 73 High-Impact Vulnerabilities in August, 70 Actively Exploited
On August 6, 2026, Apple unexpectedly released macOS Tahoe 26.6.1, Sequoia 15.7.9, and Sonoma 14.8.9 specifically to address another Screen Sharing authentication vulnerability, CVE-2026-65400. macOS Screen Sharing Flaws Enabled Pre-Auth Root Access; CVE-2026-65400 Exploited
Apple patched CVE-2026-65400 across supported macOS releases on August 6. AI-Assisted Taiwan Campaign, OpenAI Testing Pause and Other Cybersecurity News

CVE (73)

Malware (8)

People (7)

Threat Actors (2)

MITRE ATT&CK (6)

Vendors (32)

Products (36)

Tools (9)

Industries (3)

Countries (4)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.