CVE-2026-64709 in iOS
Summary
by MITRE • 07/27/2026
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to disclose kernel memory.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical memory safety issue that was resolved through enhanced memory management protocols within Apple's operating systems. The flaw allowed malicious applications to potentially access and disclose kernel memory contents, which represents a significant escalation from typical application sandboxing boundaries. Kernel memory disclosure vulnerabilities are particularly dangerous because they can expose sensitive system information including process credentials, cryptographic keys, and other confidential data structures that should remain protected from user-space applications. Such issues typically arise from improper memory handling routines where buffer overflows, use-after-free conditions, or inadequate memory access controls permit unauthorized memory reads beyond normal application boundaries.
The technical implementation of this vulnerability likely involved weaknesses in the operating system's memory management subsystem where specific kernel memory regions were not properly protected against unauthorized access attempts from user-space processes. This type of flaw often correlates with CWE-125: Out-of-Bounds Read or CWE-787: Out-of-Bounds Write vulnerabilities that occur when memory access controls are insufficiently enforced during system calls or kernel function execution. The vulnerability could have been exploited through various attack vectors including crafted memory operations, race conditions in memory allocation routines, or improper validation of memory addresses passed between user and kernel space contexts.
From an operational impact perspective, this vulnerability creates substantial risk for organizations relying on Apple devices as it enables potential privilege escalation attacks that could compromise system integrity. The ability to disclose kernel memory opens pathways for attackers to gather intelligence about running processes, extract encryption keys, or identify other sensitive information that could be leveraged in subsequent attacks. Adversaries could potentially use this information to craft more sophisticated attacks against the target systems or to bypass security controls that depend on the confidentiality of kernel memory contents.
The mitigation implemented through Apple's system updates addresses this vulnerability by strengthening memory handling protocols throughout the operating system stack. The remediation likely involved enhanced memory protection mechanisms, improved validation of memory access operations, and strengthened isolation between user-space applications and kernel memory regions. These updates specifically target iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6 versions, indicating that the fix was comprehensive across all Apple's supported platforms. Organizations should prioritize deployment of these updates to ensure protection against potential exploitation attempts that could leverage this memory disclosure capability.
Security practitioners should monitor for indicators of compromise related to unauthorized memory access patterns or unusual system behavior that might indicate attempted exploitation of similar vulnerabilities. The remediation aligns with standard security practices outlined in the ATT&CK framework under techniques such as T1059: Command and Scripting Interpreter and T1068: Exploitation for Privilege Escalation, where memory corruption vulnerabilities serve as common attack vectors for gaining elevated system privileges. Regular security assessments should verify that memory protection mechanisms are properly configured and that the updated systems maintain appropriate isolation between different privilege levels within the operating system architecture.