CVE-2026-64698 in macOS
Summary
by MITRE • 07/28/2026
The 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 or read kernel memory.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical memory handling flaw that could enable malicious applications to trigger unexpected system termination or access kernel memory contents. The issue stems from inadequate memory management protocols within the operating system's kernel space, creating potential attack vectors for privilege escalation and system compromise. The vulnerability affects multiple macOS versions including Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6, indicating a widespread impact across the macOS ecosystem. From a cybersecurity perspective, this flaw aligns with common weakness enumerations such as CWE-129, which addresses improper validation of array indices, and CWE-787, concerning out-of-bounds write operations that can lead to memory corruption. The potential for kernel memory reading represents a severe threat level since it could expose sensitive system information including cryptographic keys, user credentials, or other confidential data stored in kernel space. Attackers leveraging this vulnerability could potentially execute arbitrary code with elevated privileges, bypassing standard security mechanisms and access controls that normally protect against unauthorized system access.
The operational impact of this vulnerability extends beyond simple system instability to encompass comprehensive security compromise scenarios. When an application can cause unexpected system termination, it creates opportunities for denial-of-service attacks or potentially more sophisticated exploitation techniques. The ability to read kernel memory opens pathways for advanced persistent threat actors to gather intelligence about system configuration, running processes, and security implementations. This vulnerability directly relates to ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation,' and T1547.001, covering 'Registry Run Keys / Startup Folder,' as attackers might use such capabilities to establish persistence mechanisms. The memory handling improvements implemented in the patches address fundamental flaws in how the operating system manages memory allocation and deallocation within kernel space, particularly concerning buffer overflow protection and memory access validation.
Mitigation strategies should prioritize immediate deployment of the patched macOS versions across all affected systems, with particular attention to enterprise environments where multiple devices may be vulnerable. System administrators should implement comprehensive monitoring for unusual termination patterns or unexpected system behavior that could indicate exploitation attempts. The remediation approach involves strengthening memory management protocols through improved bounds checking and validation mechanisms that prevent unauthorized access to kernel memory regions. Organizations should conduct vulnerability assessments to identify systems running unpatched versions and establish continuous monitoring for potential exploitation indicators. Security teams should also review application whitelisting policies and implement additional controls around privilege escalation opportunities, as this vulnerability could potentially be leveraged by applications with legitimate system access to gain deeper privileges. The fix demonstrates the importance of regular security updates and proper memory management practices in preventing critical system compromise scenarios that could lead to complete system takeover or data exfiltration operations.