CVE-2026-64749 in iOS
Summary
by MITRE • 07/28/2026
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 Tahoe 26.6, visionOS 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 potentially lead to system instability and unauthorized data access within Apple's operating systems. The issue stems from inadequate memory handling mechanisms that fail to properly validate or sanitize memory operations, creating opportunities for malicious applications to exploit these weaknesses. When an application attempts to manipulate kernel memory through flawed memory allocation or deallocation processes, it can trigger unpredictable behavior that may result in system crashes or memory corruption.
The technical implementation of this vulnerability allows for a range of malicious activities that align with common attack patterns documented in the attack mitigation framework. Specifically, the flaw enables applications to potentially cause unexpected system termination through improper memory access patterns or to corrupt kernel memory structures that maintain system integrity. This type of vulnerability falls under the category of memory corruption issues that are frequently targeted by attackers seeking privilege escalation or system compromise. The root cause typically involves buffer overflows, use-after-free conditions, or improper memory deallocation sequences that create exploitable entry points for malicious code execution.
From an operational impact perspective, this vulnerability presents significant risks to both individual users and enterprise environments where Apple devices are deployed. System instability caused by unexpected termination can result in data loss, service disruption, and reduced productivity. The kernel memory corruption aspect poses even greater dangers as it can potentially allow attackers to gain deeper system access or manipulate critical system functions. Organizations relying on Apple platforms for business operations must consider the potential for unauthorized access or system compromise when evaluating this vulnerability's impact.
The remediation provided through iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, and visionOS 26.6 addresses the underlying memory handling mechanisms by implementing improved validation procedures and enhanced memory management protocols. These updates likely include stricter bounds checking, better memory allocation routines, and additional safeguards against improper memory operations that were previously allowed. The fix aligns with industry best practices for memory safety as outlined in various security frameworks and represents a proactive approach to preventing exploitation of similar vulnerabilities across Apple's ecosystem. Organizations should prioritize deployment of these updates to maintain system integrity and protect against potential exploitation attempts targeting these memory management weaknesses.
The vulnerability demonstrates the ongoing challenges in maintaining secure memory handling within complex operating system environments where multiple applications interact with kernel space resources. This type of issue commonly maps to CWE categories related to memory safety and improper resource management, representing a fundamental security concern that requires continuous attention from security teams and software vendors alike. The fix implementation reflects standard defensive programming practices including input validation, proper memory lifecycle management, and robust error handling mechanisms designed to prevent the types of memory corruption scenarios that could lead to system compromise or unauthorized access.