KEV · Actively exploited
CVE-2026-65400
CVE-2026-65400 is actively exploited (CISA KEV catalog) : critical severity (CVSS 9.8), 0 tracked apps concerned, none still exposed on their current version.
- Severity (CVSS)
- 9.8
- Exploitation
- Confirmed
- Tracked apps
- 0
- Still exposed
- 0
NVD scale
CISA KEV · EPSS predicts 1.2 %
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.
Show raw CVSS vector
CISA Known Exploited Vulnerability
- Added to KEV
- 2026-08-18
- Remediation deadline
- 2026-08-21
- 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.
- Ransomware
- Unknown (not documented by CISA)
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
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