CVE-2026-64715
ZDI-26-610: Apple Safari JavaScriptCore B3 ReduceStrength Phase Use-After-Free Remote Code Execution Vulnerability
Published Aug 24, 2026
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.
Timeline
Detection, updates, and resolution for this record.
Aug 24, 2026 · Catalog
Detected
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.
Sources
- CVE.orgCVE-2026-64715
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-64715
30-day exploitation probability 0.4%
first.org - Zero Day InitiativeZDI-26-610
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.
zerodayinitiative.com