CVE-2026-65400NVD

Vulnerability Summary

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.

Severity Level

CRITICAL(9.8)

Published Date

Aug 6, 2026

Last Modified

Aug 19, 2026

Exploitation Status

ACTIVE

EPSS Score (30-Day)

10.46%Probability

Root Weakness (CWE)

CWE-287: Improper Authentication ↗

When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.

CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Apple Macos >= 14.0 and < 14.8.9
Apple Macos >= 15.0 and < 15.7.9
Apple Macos >= 26.0 and < 26.6.1

Patched Versions

Apple Macos 14.8.9
Apple Macos 15.7.9
Apple Macos 26.6.1

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