CVE-2026-64729 in iOS
Summary
by MITRE • 07/28/2026
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a classic use-after-free condition that was resolved through enhanced memory management protocols across Apple's ecosystem. The flaw emerged from improper handling of memory allocation and deallocation processes where an application could potentially access memory locations after they had been freed, creating opportunities for system instability and potential exploitation. Such issues typically arise when software components fail to properly track memory references or when there are race conditions during object lifecycle management. The vulnerability affects multiple operating systems including iOS iPadOS macOS Tahoe tvOS visionOS and watchOS all at version 26.6 and later releases.
The technical nature of this flaw falls under the common weakness enumeration CWE-416 which specifically addresses use after free conditions in memory management. When an application attempts to access memory that has already been released back to the system, it can lead to unpredictable behavior including arbitrary code execution or system crashes. This particular vulnerability was classified as a memory safety issue where the operating system's memory management subsystem failed to properly enforce memory access boundaries. The flaw could be exploited by malicious applications that deliberately manipulate memory references to trigger the use-after-free condition.
The operational impact of this vulnerability extends beyond simple system crashes to potentially enable more sophisticated attacks within the iOS ecosystem. While the primary effect described is unexpected system termination, such vulnerabilities often serve as stepping stones for attackers seeking to escalate privileges or execute unauthorized code on compromised devices. The fact that multiple Apple platforms were affected indicates a systemic issue in how memory management was handled across different device types and operating environments. Attackers could potentially craft malicious applications designed to exploit this condition, causing devices to crash repeatedly or potentially gaining unauthorized access to system resources.
The remediation implemented by Apple focused on strengthening memory management controls and improving the garbage collection mechanisms within their operating systems. The fixes included enhanced reference counting implementations and stricter validation of memory access patterns before allowing applications to interact with freed memory locations. These improvements align with industry best practices for preventing memory safety vulnerabilities and demonstrate Apple's commitment to addressing security concerns through comprehensive system-level patches. Organizations should prioritize updating all affected devices to version 26.6 or later to ensure protection against potential exploitation attempts. The vulnerability serves as a reminder of the critical importance of proper memory management in preventing both accidental system failures and intentional security breaches within mobile and embedded operating systems.