CVE-2026-112680 in iOS
Summary
by MITRE • 10/26/2026
An out-of-bounds read was addressed with improved bounds checking. 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, visionOS 27.2. Processing maliciously crafted web content may result in the disclosure of process memory.
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Analysis
by VulDB Data Team • 10/27/2026
The vulnerability described constitutes an out-of-bounds read flaw within the Safari rendering engine and associated WebKit components across multiple Apple operating systems including iOS, iPadOS, macOS, and visionOS. This type of error typically arises when a program reads data from a memory location that lies outside the intended buffer boundaries. In the context of web browsers, this often occurs during the parsing or execution of complex JavaScript code, CSS stylesheets, or HTML structures contained within maliciously crafted web content. The root cause is insufficient validation of array indices or pointer arithmetic before accessing memory regions, allowing an attacker to read data that was not intended for public access.
From a technical perspective, this flaw falls under the Common Weakness Enumeration category CWE-125, which defines out-of-bounds read vulnerabilities. These weaknesses are particularly dangerous in browser environments because they can be triggered remotely via standard web navigation without requiring user interaction beyond visiting a compromised website. The absence of strict bounds checking means that the application does not verify whether the requested memory offset is within the allocated limits before performing the read operation. This lack of defensive programming allows for arbitrary memory reads, which bypasses normal security boundaries established by the operating system's sandboxing mechanisms designed to isolate browser processes from sensitive system data and user credentials.
The operational impact of this vulnerability centers on information disclosure through process memory leakage. When an attacker successfully exploits this flaw, they can extract contents from adjacent memory regions that may contain sensitive information such as session cookies, authentication tokens, private keys, or other confidential data belonging to the current browsing context. This capability effectively undermines the confidentiality guarantees provided by modern browser security models. By leveraging techniques like side-channel analysis combined with precise memory reads, an attacker could potentially reconstruct cryptographic secrets or steal user credentials stored in memory, leading to account compromise and further lateral movement within a targeted environment.
In terms of threat modeling, this vulnerability aligns with MITRE ATT&CK technique T1005, which refers to Data from Local System Retrieval. Specifically, it facilitates the collection of sensitive information directly from application memory space rather than through file system access or network exfiltration alone. The ability to read arbitrary process memory provides attackers with a powerful tool for post-exploitation activities, enabling them to gather intelligence that can be used for further attacks against users or organizations relying on these platforms.
Mitigation strategies primarily involve the software updates provided by Apple in Safari 27.2 and corresponding versions of iOS, iPadOS, macOS Golden Gate, and visionOS. These patches implement improved bounds checking logic within the WebKit engine to ensure that all memory access operations are validated against allocated buffer sizes before execution. Users should immediately update their devices to these patched versions to eliminate the attack surface. Additionally, defense-in-depth measures such as enabling Content Security Policy headers on web applications can help mitigate some risks by restricting how scripts interact with page content, although this does not fix the underlying engine flaw. Regular patch management and keeping all client-side software up to date remain critical practices for maintaining security posture against memory corruption vulnerabilities of this nature.