CVE-2026-64727

CRITICAL

macOS and tvOS < 26.6 - Unexpected System Termination via Type Confusion

Title source: llm

Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.6, tvOS 26.6. An app may be able to cause unexpected system termination.

References (2)

Core 2

Core References

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

https://support.apple.com/en-us/128069

Scores

CVSS v3 9.8

EPSS 0.0036

EPSS Percentile 28.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-843

Status published

Products (4)

Apple/macOS < 26.6

apple/macos 26.0 - 26.6

Apple/tvOS < 26.6

apple/tvos < 26.6

Published Jul 27, 2026

Tracked Since Jul 28, 2026