CVE-2026-64691

CriticalCVSS 9.8/10Last modified Oct 24, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-120

Affected software

No affected versions have been published.

Timeline

Published
Jul 27, 2026
Last modified
Oct 24, 2026
NVD status
Analyzed

Related CVEs from 2026

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CVE-2026-64691: Critical severity, CVSS 9.8 | Vulnix