CVE-2026-112684 in iOS
Summary
by MITRE • 10/26/2026
This issue was addressed through improved state management. This issue is fixed in Safari 27.2, iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, tvOS 27.2, visionOS 27.2, watchOS 27.2. Processing maliciously crafted web content may lead to an unexpected process crash.
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Analysis
by VulDB Data Team • 10/27/2026
The vulnerability described involves a flaw in the state management logic within Apple's WebKit rendering engine, which powers Safari and other web-capable applications across its ecosystem. State management is critical for maintaining consistency between the user interface, browser history, session data, and internal application states during complex interactions with web content. When this mechanism fails to properly validate or transition through expected states, it can result in an inconsistent condition that the software does not know how to handle gracefully. This specific issue was addressed by improving the robustness of these state transitions, ensuring that invalid or unexpected inputs do not lead to a breakdown in application logic. The fix is included in Safari 27.2 and various operating system versions including iOS 26.7.2, iPadOS 26.7.2, iOS 27.2, iPadOS 27.2, macOS Golden Gate 27.2, tvOS 27.2, visionOS 27.2, and watchOS 27.2.
From a technical perspective, this flaw aligns with CWE-610, which refers to Externally Controlled Reference to a Resource in Another Domain or context, although more specifically it relates to improper state transitions often categorized under CWE-841: Improper Enforcement of Behavioral Workflow. In the context of web browsers, an attacker can craft malicious HTML, JavaScript, or other web content designed to trigger specific sequences of events that exploit gaps in how the browser tracks its internal state. For instance, rapid navigation, complex DOM manipulations, or interactions with Web APIs might cause the application to enter a corrupted state where memory pointers are invalid or resources are accessed incorrectly. This misalignment between expected and actual system states is a common root cause for stability issues in large software systems like browsers that handle untrusted input from the internet daily.
The operational impact of this vulnerability is primarily characterized by denial of service through application crashes. When a user visits a maliciously crafted website or interacts with compromised web content, the browser may encounter an unrecoverable error due to the flawed state management. This results in the unexpected termination of the Safari process or related system components. While the primary impact is stability and availability rather than direct code execution or data exfiltration, such crashes can be leveraged by attackers for denial-of-service attacks against specific users or potentially as a precursor step in more complex attack chains where crash reliability is used to bypass security mitigations like heap randomization or stack canaries. The unpredictability of the crash location makes it difficult for automated exploit development tools to reliably chain this flaw with other vulnerabilities, but it remains a significant concern for user experience and system stability.
In terms of threat modeling, this vulnerability falls under MITRE ATT&CK technique T1496: Resource Hijacking if used for denial of service, or potentially as part of an initial access vector where the crash is used to trigger other behaviors in conjunction with zero-day exploits. The attack complexity is generally low because it requires only that a user visits a malicious webpage, which can be achieved through phishing links, drive-by downloads, or compromised advertising networks. There are no known workarounds for users who must interact with untrusted web content; therefore, the primary mitigation strategy relies on timely patching of the underlying operating systems and browser software. Administrators should ensure that all devices within their environment are updated to at least Safari 27.2 or the corresponding OS versions listed above. Additionally, implementing strict Content Security Policies (CSP) and using browser extensions that restrict script execution can reduce the attack surface by limiting the types of web content that users encounter, thereby reducing the likelihood of triggering such state-related flaws in production environments.