CVE-2026-64765 in iOS
Summary
by MITRE • 07/28/2026
An integer overflow was addressed with improved input validation. 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. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.
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Analysis
by VulDB Data Team • 07/28/2026
An integer overflow vulnerability exists in multiple Apple operating systems including iOS iPadOS macOS Sequoia macOS Sonoma macOS Tahoe tvOS visionOS and watchOS versions 26.6 and later. This flaw represents a critical security weakness that can be exploited through the processing of maliciously crafted files. The vulnerability stems from insufficient input validation mechanisms that fail to properly handle integer values exceeding their maximum allowable limits. When an application encounters such malformed input during file processing operations the integer overflow condition triggers potentially leading to application instability or unauthorized code execution.
The technical implementation of this vulnerability falls under the common weakness enumeration CWE-190 which specifically addresses integer overflow conditions. This classification indicates that the flaw occurs when a program attempts to perform arithmetic operations on integer values that exceed the maximum value that can be represented by the data type. The affected systems process file inputs without adequate bounds checking or sanitization procedures that would normally prevent such overflow scenarios from occurring. Attackers can craft malicious files with specially designed integer values that, when processed by vulnerable applications, cause the system to behave unpredictably.
The operational impact of this vulnerability extends beyond simple application crashes as it provides potential pathways for arbitrary code execution within the target environment. When the integer overflow occurs during file parsing or processing operations the application may experience unexpected termination followed by memory corruption that could be leveraged by attackers to inject and execute malicious code. This represents a significant threat vector as it allows for privilege escalation and system compromise within the confines of the operating system's security model. The vulnerability affects multiple device types including mobile devices tablets and wearable technology platforms, amplifying its potential attack surface.
Apple has addressed this vulnerability through comprehensive input validation improvements in the affected software versions. The fix implements enhanced bounds checking mechanisms that prevent integer values from exceeding their defined maximum limits during file processing operations. Security updates for 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 all incorporate these protective measures that monitor and validate integer inputs before processing. Organizations should immediately deploy these updates to mitigate the risk of exploitation as the vulnerability could be actively targeted by threat actors seeking to compromise Apple devices in the wild.
The remediation approach aligns with industry best practices for integer overflow prevention outlined in various security frameworks including those referenced in the MITRE ATT&CK framework under techniques related to privilege escalation and code injection. System administrators should prioritize deployment of these security patches across all managed devices and implement monitoring procedures to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of input validation in preventing memory corruption attacks and maintaining system integrity across modern operating environments where file processing operations remain a common attack surface for cyber adversaries.