Vulnerability · NVD

CVE-2026-64691

CVE-2026-64691 : critical severity (CVSS 9.8). No tracked catalog app is linked to this CVE.

Severity (CVSS): 9.8
Exploitation: 0.5 %
Tracked apps: 0
Still exposed: 0

Published on 2026-07-27

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

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

EPSS 0.47% exploit very unlikely percentile 37.8%

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.

macOS Fixed in 26.6

View on NVD ↗ Advisory · support.apple.com

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