CVE-2026-64697 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 corrupt kernel memory.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical memory management flaw that could enable malicious applications to trigger unexpected system termination or cause kernel memory corruption. The issue stems from inadequate memory handling mechanisms within the operating system's kernel space, where improper memory allocation and deallocation processes create opportunities for exploitation. When an application attempts to manipulate memory in ways that exceed normal boundaries or access protected regions, the system may crash or corrupt critical kernel data structures. This type of vulnerability falls under the broader category of memory safety issues that have been extensively documented in cybersecurity literature and are commonly associated with buffer overflows, use-after-free conditions, and improper memory management practices.
The technical exploitation of this flaw typically involves crafting malicious code that leverages memory handling weaknesses to either force system crashes through invalid memory operations or to corrupt kernel memory in ways that could lead to privilege escalation. Attackers may utilize techniques such as heap spraying, memory corruption patterns, or race conditions to exploit the vulnerable memory management functions. From a cybersecurity perspective, this vulnerability aligns with common attack patterns documented in the attack tactic of privilege escalation and defense evasion within the MITRE ATT&CK framework, particularly under the techniques involving system memory manipulation and kernel exploitation.
The operational impact of this vulnerability extends beyond simple system instability to potentially enable more sophisticated attacks that could compromise entire system integrity. When kernel memory becomes corrupted, it can lead to unpredictable behavior including system crashes, data loss, or even persistent backdoor access if exploitation is successful. The fix implemented in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6 addresses the root cause by improving memory handling mechanisms throughout the kernel space operations. These updates likely include enhanced bounds checking, improved memory allocation algorithms, and stronger validation of memory access patterns to prevent unauthorized manipulation of critical system resources.
Organizations should prioritize immediate deployment of these security updates across all affected systems to mitigate potential exploitation risks. The remediation approach focuses on strengthening memory management protocols at the kernel level, which aligns with industry best practices outlined in standards such as those referenced in the Common Weakness Enumeration (CWE) catalog under memory safety weaknesses. System administrators should also implement additional monitoring for anomalous memory usage patterns and unexpected system crashes that could indicate attempted exploitation of similar vulnerabilities. Regular security assessments and vulnerability scanning should include checks for proper memory handling implementation to ensure comprehensive protection against this class of memory-related threats.