Critical severity · published Jul 27, 2026
CVE-2026-64727
A type confusion issue was addressed with improved memory handling
9.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
before 26.6 · source: vendor, NVD
TV
tvOS · Apple
before 26.6 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64727
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-64727
Release Notes
https://support.apple.com/en-us/128067
Release Notes
https://support.apple.com/en-us/128069
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