Buffer Overflow Vulnerability in macOS Tahoe from Apple
CVE-2026-64691

Currently unrated

Key Information:

Vendor: Apple
Status: Mac OS
Vendor: CVE Published:; 27 July 2026

What is CVE-2026-64691?

A buffer overflow vulnerability was identified in macOS Tahoe 26.6, which could allow an application to exploit inadequate size validation. This flaw might lead to unexpected system termination, posing potential risks to user data and system integrity. Apple has implemented improvements in size validation to mitigate this issue.

Affected Version(s)

macOS 0 < 26.6

References

https://support.apple.com/en-us/128067

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jul 27, 2026
Vulnerability Reserved
Jul 20, 2026

CVE-2026-64691 Data

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