CVE-2026-43800 in iOS
Summary
by MITRE • 07/28/2026
An information disclosure issue was addressed by removing the vulnerable code. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 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 critical information disclosure flaw that could potentially allow malicious applications to access sensitive user data through compromised system mechanisms. The issue was resolved by removing the vulnerable code components that were previously exposing confidential information to unauthorized applications. The fix was implemented across multiple Apple operating systems including iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, and watchOS 26.6, indicating the widespread nature of the vulnerability across the Apple ecosystem. From a cybersecurity perspective, this type of vulnerability falls under CWE-200 which specifically addresses information exposure weaknesses in software systems. The vulnerability's classification aligns with ATT&CK technique T1059 which covers execution through application layer protocols and command injection methods that can be exploited to gain unauthorized access to system resources.
The technical implementation of this flaw likely involved improper access controls or inadequate data sanitization mechanisms within the operating system's core frameworks. Applications that previously had elevated privileges or were able to manipulate system calls may have been able to traverse security boundaries to access user data that should have remained protected. This type of vulnerability represents a breakdown in the principle of least privilege and could potentially be exploited by malicious actors to extract personal information, credentials, or other sensitive data stored within the device's memory or storage systems.
The operational impact of this vulnerability extends beyond simple data theft to encompass potential privacy violations and compliance issues for organizations relying on Apple devices. The exploitation of such vulnerabilities can lead to cascading security incidents where initial unauthorized access points are used to establish persistent presence within target environments. Security professionals should consider this vulnerability as part of broader threat modeling exercises, particularly when evaluating the security posture of mobile device management systems or enterprise environments that rely heavily on Apple ecosystem components. The remediation process demonstrates Apple's approach to addressing information disclosure vulnerabilities through direct code removal rather than patching, which suggests the flaw was fundamental enough to warrant complete elimination from the system architecture.
Organizations should prioritize updating affected systems to the latest versions of their respective operating systems to ensure protection against potential exploitation of this vulnerability. The fix addresses a critical gap in access control mechanisms that could have been leveraged by malicious applications to gain unauthorized information access, thereby protecting user privacy and maintaining compliance with data protection regulations. Security teams should monitor for any indicators of compromise related to this vulnerability and consider implementing additional monitoring measures to detect potential exploitation attempts targeting similar information disclosure weaknesses within their environments.