PT-2026-65231 · Apple · Macos Tahoe

CVE-2026-64691 · Published 2026-07-27 · Updated 2026-07-27

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions macOS Tahoe versions prior to 26.6

Description A buffer overflow occurs due to insufficient size validation, which may allow an application to cause unexpected system termination. A buffer overflow is a condition where a program writes more data to a block of memory than it can hold, potentially overwriting adjacent memory.

Recommendations Update to macOS Tahoe version 26.6.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2026-64691

Affected Products

Macos Tahoe

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-64691 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-64691 · Note
• https://support.apple.com/en-us/128067 · Note