CVE-2026-65400

CVSS 9.8 · CRITICAL

Exploited in the wild

Remediation overdue by 35 days

EPSS p40

Lower risk — in the top 60% least-likely-to-be-exploited CVEs.

Patch available

Vendor advisory or patch linked

Published 8/6/2026 · updated 8/19/2026 · CWE-287

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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.

CVSS 9.8 — CRITICAL

9.8 / 10

AV: Network
AC: Low complexity
PR: No privileges
UI: No user interaction
S: Scope unchanged
C: Confidentiality: High
I: Integrity: High
A: Availability: High

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

EPSS exploitation probability

0.5%

Percentile p40 — Lower risk — in the top 60% least-likely-to-be-exploited CVEs.

Affected products

1 vendor/product entries

Apple Macos≥ 14.0 and < 14.8.9

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Timeline

Aug 6, 2026 · Disclosed / published in NVD
Aug 18, 2026 · Added to CISA KEV catalog
Aug 19, 2026 · Intel last updated
Aug 21, 2026 · CISA remediation deadline

Intel sources

Which upstream feeds returned data for this CVE, and when they were last fetched.

NVD· 36 days ago
CVE.org· 36 days ago
FIRST EPSS· 36 days ago
CISA KEV· 12 days ago
OSV· 36 days ago

Listed in CISA KEV

Added 2026-08-18 · Remediation overdue by 35 days.

References

Vendor & CERT advisories4

Other3

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