CVE-2026-64727
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Apple Macos
PublishedJul 27, 2026
First seenJul 27, 2026
Weakness typeCWE-843CWE-843
How to fix
Update
- apple macos26.6 or later
- apple tvos26.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple macos | 26.0 ≤ v < 26.6 | 26.6 |
| apple tvos | v < 26.6 | 26.6 |
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