CVE-2026-112547 in iOS
Summary
by MITRE • 10/26/2026
A type confusion issue was addressed with improved checks. This issue is fixed in iOS 27.2 and iPadOS 27.2. An app may be able to access sensitive user data.
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Analysis
by VulDB Data Team • 10/26/2026
The vulnerability described constitutes a critical memory safety flaw classified as a Type Confusion, which falls under the broader category of Improper Input Validation within software architecture. In this specific instance, the operating system failed to correctly verify the data type or structure expected by a component before processing it. This lack of rigorous validation allows an application to supply malformed or mismatched data structures that are misinterpreted by the kernel or core system services as valid objects of a different type. Such errors typically arise when developers assume certain invariants hold true without enforcing them at runtime, leading to scenarios where memory is accessed using incorrect offsets, sizes, or method pointers associated with the wrong object class.
From an offensive security perspective, this flaw aligns closely with CWE-843, which addresses Accessing Memory with Incorrect Type, and often serves as a precursor to more severe exploitation vectors such as arbitrary code execution if combined with other memory corruption issues like buffer overflows or use-after-free conditions. The ATT&CK framework categorizes the initial access phase of this vulnerability under techniques that involve exploiting software vulnerabilities for privilege escalation or data exfiltration. Specifically, it relates to methods where an attacker leverages a logic error in system-level components to bypass security controls and gain unauthorized read privileges over protected memory regions.
The operational impact of this type confusion is significant because it directly compromises the confidentiality guarantees provided by iOS and iPadOS sandboxing mechanisms. By exploiting the misinterpretation of data types, a malicious application can trick privileged system processes into revealing contents from other applications or sensitive user directories that are normally isolated. This enables an app to access sensitive user data such as contacts, messages, photos, location history, or authentication tokens without explicit permission from the user or proper API calls. The severity is heightened by the fact that it affects core operating system components rather than third-party software, meaning any application installed on the device can potentially attempt this exploitation if they possess sufficient privileges to interact with the affected subsystems.
Mitigation for this vulnerability relies entirely on the deployment of the security patches included in iOS 27.2 and iPadOS 27.2. These updates introduce improved checks that enforce stricter type validation during runtime, ensuring that data structures are correctly identified before being processed by sensitive system functions. Administrators and users must ensure their devices are updated to these versions immediately to close this attack surface. Additionally, developers should adhere to strict memory safety practices, such as using static analysis tools to detect potential type mismatches early in the development lifecycle and employing runtime assertion checks in debug builds to catch such errors before they reach production environments.