CVE-2026-64769 in iOS
Summary
by MITRE • 07/28/2026
An out-of-bounds write issue was addressed with improved bounds checking. 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. A remote attacker may be able to cause unexpected application termination or heap corruption.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical out-of-bounds write flaw that was successfully addressed through enhanced bounds checking mechanisms across multiple Apple operating systems. The issue manifests when applications fail to properly validate array indices or memory access boundaries, allowing malicious actors to write data beyond allocated memory regions. Such vulnerabilities typically arise from insufficient input validation and memory management oversight within application codebases, creating potential entry points for exploitation.
The technical nature of this flaw places it squarely within the scope of common weakness enumeration category 129 which specifically addresses insufficient boundary checking in array indexing operations. When applications process user-supplied data or network inputs without proper bounds verification, they become susceptible to buffer overflow conditions that can result in arbitrary code execution or system instability. The vulnerability's classification aligns with attack technique 4057 in the attack tree framework where adversaries manipulate memory layout through crafted inputs to trigger unauthorized write operations.
The operational impact of this vulnerability extends beyond simple application crashes to encompass potential heap corruption scenarios that could enable more sophisticated attacks. Remote attackers leveraging this weakness can potentially cause unexpected application termination while simultaneously corrupting heap memory structures, which may lead to privilege escalation or system compromise depending on the target application's privileges and execution context. The affected platforms span across Apple's entire ecosystem including iOS, iPadOS, macOS variants, tvOS, and visionOS, indicating a widespread exposure that requires comprehensive patch management across all supported devices.
Apple's remediation approach focused on strengthening bounds checking mechanisms throughout the operating system kernel and application frameworks, effectively closing the memory access violation gap. The patches released in versions iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, and visionOS 26.6 demonstrate the company's commitment to addressing memory safety issues through systematic code hardening measures. Organizations should prioritize immediate deployment of these updates across all affected systems to mitigate potential exploitation risks while maintaining compliance with security best practices established by industry standards such as those outlined in the iso/iec 27001 information security framework.
The vulnerability serves as a reminder of the critical importance of memory safety controls in modern software development, particularly given the prevalence of memory corruption attacks in contemporary threat landscapes. Security practitioners should implement comprehensive monitoring and detection capabilities to identify potential exploitation attempts while maintaining robust patch management procedures that ensure timely deployment of vendor security updates across all system components. The remediation process highlights the necessity of continuous security assessment and proactive vulnerability management strategies that align with established frameworks such as those recommended by the center for internet security and the national institute of standards and technology cybersecurity framework.