CVE-2026-43780 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 texture may lead to unexpected app termination.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/28/2026
An integer overflow vulnerability has been identified and resolved through enhanced input validation mechanisms in Apple's operating system releases. This flaw represents a classic software security weakness where an application fails to properly validate integer values during processing operations, potentially allowing malicious inputs to cause unexpected behavior. The vulnerability specifically manifests when applications process texture data, which are fundamental components in graphics rendering and visual display operations across all Apple platforms.
The technical implementation of this vulnerability stems from inadequate bounds checking during texture handling operations within the graphics processing pipeline. When a specially crafted texture file is processed by an application, the integer overflow condition occurs during calculations related to memory allocation or buffer sizing. This type of flaw aligns with CWE-190, which specifically addresses integer overflow conditions that can lead to memory corruption and arbitrary code execution. The vulnerability operates at the intersection of software security and graphics processing, where malformed input data triggers computational errors that compromise application stability.
The operational impact of this vulnerability extends across all Apple platforms including iOS, iPadOS, macOS variants, tvOS, visionOS, and watchOS, indicating a widespread concern affecting multiple device categories. Applications that handle external texture data, particularly those involved in gaming, multimedia processing, or graphic design, face elevated risk when running on affected versions. The consequence of exploitation results in unexpected application termination rather than more severe outcomes like code execution or privilege escalation, though this still represents a significant degradation of service and potential denial of functionality for users.
The remediation implemented by Apple addresses the core issue through enhanced input validation protocols that properly check integer values before processing texture data. This fix ensures that any maliciously crafted texture inputs are rejected or handled appropriately without causing system instability. The vulnerability affects multiple macOS releases including Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6, demonstrating the complexity of maintaining security across different operating system variants. Security professionals should note that this issue represents a typical scenario where proper input sanitization prevents exploitation while maintaining application functionality.
Organizations implementing these security updates should prioritize deployment across all affected platforms to ensure comprehensive protection against potential exploitation attempts. The vulnerability serves as a reminder of the importance of robust input validation in graphics processing applications and highlights how seemingly minor computational errors can impact overall system stability and user experience. This fix aligns with industry best practices outlined in the ATT&CK framework under software exploitation techniques that target memory corruption vulnerabilities during data processing operations.