ZDI-CAN-32069: ZDI-26-610: Apple Safari JavaScriptCore B3 ReduceStrength Phase Use-After-Free Remote Code Execution Vulnerability
Published Aug 24, 2026
·Updated
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-64715.
Affected Software
1 affected component
Apple Safari
Event History
Aug 24, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must persuade the target to visit a malicious page or open a malicious file. Successful exploitation can result in arbitrary code execution.
2
Which deployments are known to be affected?
The available information identifies affected installations of Apple Safari, but does not specify affected versions, platforms, or configuration conditions.