CVE-2026-112705 in iOS
Summary
by MITRE • 10/26/2026
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, tvOS 27.2. An app may be able to cause unexpected system termination.
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Analysis
by VulDB Data Team • 10/26/2026
The vulnerability described constitutes a critical memory safety defect classified as an out-of-bounds write, which falls under the Common Weakness Enumeration category CWE-787: Out-of-Bounds Write. This type of flaw occurs when software writes data to a memory location beyond the intended buffer boundary, potentially overwriting adjacent memory structures that are critical for system stability or security. In this specific instance, the underlying issue was addressed through improved bounds checking mechanisms within the affected operating systems. The absence of rigorous validation prior to memory allocation and writing operations allowed an application to manipulate pointer arithmetic in a way that breached allocated limits, leading to unauthorized modification of system resources.
From an operational perspective, the immediate impact observed is unexpected system termination. This indicates that the out-of-bounds write likely corrupted critical data structures or triggered hardware-level protection mechanisms such as segmentation faults or kernel panics. While the primary manifestation is a denial of service through application crash or system restart, memory corruption vulnerabilities often serve as precursors to more severe exploits. An attacker with local execution capabilities could potentially leverage this instability to escalate privileges by carefully crafting payloads that overwrite function pointers or return addresses on the stack, thereby achieving arbitrary code execution. This aligns with ATT&CK technique T1059: Command and Scripting Interpreter if used for initial access, but more critically relates to privilege escalation vectors where memory corruption is exploited to bypass security controls like ASLR or DEP.
The remediation strategy implemented by Apple involves enhancing the bounds checking logic within the core system components responsible for handling user-space requests from applications. By validating array indices and buffer lengths before performing write operations, the software prevents writes that exceed allocated boundaries. This fix has been deployed across a wide range of iOS and iPadOS versions (26.7.2, 27.2), macOS releases including Golden Gate, Sequoia, and Tahoe variants, as well as tvOS version 27.2. The broad scope of the update suggests that the vulnerability existed in shared system libraries or frameworks accessible by third-party applications across multiple device ecosystems.
For administrators and users, the primary mitigation is to ensure all devices are updated to the specified patched versions immediately. Since this vulnerability can be triggered by a malicious app installed on the device, maintaining up-to-date software ensures that the improved bounds checking mechanisms are active. Additionally, enforcing strict application sandboxing policies helps limit the potential blast radius if an exploit attempt occurs. Developers should also review their code for similar memory management patterns to prevent introducing analogous weaknesses in custom applications or plugins that interact with these system components.