CVE-2026-64704 in macOS
Summary
by MITRE • 07/28/2026
A type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a type confusion flaw that emerged from inadequate memory management practices within Apple's operating systems. The issue stems from how the system handles object types during runtime operations, creating potential pathways for malicious applications to exploit memory corruption patterns. When an application attempts to manipulate objects of different types through improper casting or dereferencing operations, the system may incorrectly interpret data structures leading to unpredictable behavior.
The technical implementation of this vulnerability involves memory layout inconsistencies where the operating system's runtime environment fails to properly validate type information during object manipulation. This allows attackers to craft specific inputs that cause the system to treat memory locations as different data types than intended, potentially leading to arbitrary code execution or system instability. The flaw specifically manifests when applications interact with memory regions containing objects whose types are not properly validated before access operations occur.
Operating system stability remains at significant risk due to this vulnerability as it can be exploited to trigger unexpected termination sequences within the kernel or critical system processes. Applications that successfully exploit this type confusion may cause system crashes, application hangs, or even complete system reboots without proper error handling. The impact extends beyond individual applications since the memory corruption affects core operating system components that manage resource allocation and process isolation.
Mitigation strategies should focus on immediate deployment of the patched versions mentioned in the advisory, specifically macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. System administrators should prioritize patch management across all affected devices while implementing additional monitoring for unusual termination patterns or memory access violations. The fix addresses the root cause through enhanced memory validation routines that properly enforce type checking before object manipulation operations occur. This aligns with common vulnerability remediation practices outlined in CWE-461 and follows established security frameworks such as those referenced in the MITRE ATT&CK matrix for privilege escalation techniques targeting kernel memory management systems.