HIGHVulnerability
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CISA KEV: Apple macOS — Apple macOS Improper Authentication Vulnerability

·Source: CISA KEV

Updated:

Executive Summary

Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network to authenticate to Screen Sharing without valid credentials.

Analysis

Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network to authenticate to Screen Sharing without valid credentials. Added to CISA Known Exploited Vulnerabilities catalog on 2026-08-18. Remediation due: 2026-08-21.

Indicators of Compromise (1)

CVE (1)
CVE-2026-65400
NVDMITRE CVE
Source Attribution

Originally published by CISA KEV on Aug 18, 2026. Verified by: CISA.

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