Vulnerability record · CVE-2026-64767 · published 27 July 2026

CVE-2026-64767: Apple macos classic buffer overflow vulnerability

Apple · Macos

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

9.8 CVSS 3.1 Critical EPSS 0.78% · top 45.9% CWE-120 · Classic buffer overflow

9.8CVSS 3.1 base score

0.78%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

28 Jul 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Macos Apple

References

Link	Tags
https://support.apple.com/en-us/128067	Release NotesVendor Advisory
https://support.apple.com/en-us/128071	Release NotesVendor Advisory
https://support.apple.com/en-us/128072	Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-64767), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.