CVE-2026-43796 in iOS
Summary
by MITRE • 07/28/2026
This issue was addressed with improved data protection. 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. An app may be able to access sensitive user data.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a significant data protection weakness that could potentially allow malicious applications to access sensitive user information on Apple devices. The issue stems from inadequate safeguards in the operating system's data handling mechanisms, creating an avenue for unauthorized data access that compromises user privacy and security. The fix implemented in 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 addresses fundamental flaws in the system's access control and data protection frameworks.
The technical flaw likely involves insufficient validation of application permissions or inadequate isolation between different system components that handle user data. This type of vulnerability would typically fall under CWE-284 - Improper Access Control, where applications may be able to bypass normal security restrictions to access protected resources. The issue could manifest through various attack vectors including privilege escalation, improper input validation, or weaknesses in the application sandboxing mechanisms that Apple employs to separate apps from each other and from system resources.
The operational impact of this vulnerability is substantial as it creates a persistent risk for user privacy across all affected Apple platforms. Attackers could potentially exploit this weakness to access personal information such as contacts, messages, location data, or other sensitive user content without proper authorization. This represents a critical security gap that could enable sophisticated attacks targeting individual users or organizations relying on Apple devices for their operations and communications.
The mitigation strategy implemented by Apple involves comprehensive updates to the underlying data protection mechanisms across all supported operating systems. These fixes likely include enhanced access control checks, improved application sandboxing, and strengthened validation of data access requests. Security professionals should prioritize deployment of these updates across all affected devices to ensure protection against potential exploitation. Organizations should also conduct thorough security assessments to verify that their Apple device management policies adequately address this vulnerability category and consider implementing additional monitoring for suspicious data access patterns.
From an ATT&CK framework perspective, this vulnerability could map to techniques involving privilege escalation and credential access, potentially enabling adversaries to move laterally within affected systems or maintain persistent access through unauthorized data exfiltration. The fix addresses the root cause of information disclosure through improved system-level protections that align with security best practices for protecting sensitive user data in mobile and desktop environments.
This vulnerability demonstrates the ongoing challenge of maintaining robust security in complex operating system environments where multiple applications interact with shared resources and user data. The fact that it required updates across multiple Apple platforms indicates a systemic weakness that needed coordinated remediation rather than isolated patching. Security teams should remain vigilant about similar issues in other mobile and desktop platforms, as this type of access control vulnerability remains a common vector for attacks targeting user privacy and sensitive information access.