CVE-2026-64727

A type confusion issue was addressed with improved memory handling

Critical · published July 27, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
41.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00499 · 41.8th percentile
Published
2026-07-27T20:13Z
EPSS history
Timeline
  • 27 JUL 20:13Z
    A type confusion issue was addressed with improved memory handling
    cvelistv5