CVE-2026-64699

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-27 · updated 2026-10-24
Weakness: CWE-457

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to disclose kernel memory.

Affected products

Apple macOS: from 14.0 before 14.8.8; from 15.0 before 15.7.8; from 26.0 before 26.6 — fixed in 14.8.8, 15.7.8, 26.6

How to fix

Upgrade to a fixed version: Apple macOS 14.8.8, 15.7.8, 26.6. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128071
https://support.apple.com/en-us/128072

Get alerted when CVE-2026-64699 or the next vulnerability affects your stack