CVE-2026-112507 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 27.2 and iPadOS 27.2. An app may be able to cause unexpected system termination or write kernel memory.
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Analysis
by VulDB Data Team • 10/26/2026
The vulnerability described involves a critical memory management flaw within the operating systems of Apple devices, specifically affecting iOS and iPadOS versions prior to 27.2. This issue is classified as an out-of-bounds write, which represents a severe category of software defects where a program writes data beyond the boundaries of allocated memory buffers. In the context of mobile operating system kernels or privileged subsystems, such errors are particularly dangerous because they can compromise the integrity and stability of the entire device environment. The root cause lies in insufficient validation checks during memory allocation or access operations, allowing an application to manipulate pointers or indices that exceed the intended limits of a data structure.
From a technical perspective, this flaw enables an attacker who has successfully executed arbitrary code within a sandboxed app context to interact with kernel-level memory structures improperly. By exploiting the lack of rigorous bounds checking, the malicious software can overwrite adjacent memory locations that were not intended for modification. This unauthorized write operation disrupts the expected state of system variables or control flow mechanisms. The immediate operational impact includes potential unexpected system termination, commonly known as a crash or denial of service condition. However, the more severe implication is the ability to write arbitrary data into kernel memory, which can lead to privilege escalation if the overwritten memory controls execution paths or security policies.
This vulnerability aligns with Common Weakness Enumeration (CWE) standards, specifically CWE-787: Out-of-bounds Write and potentially CWE-120: Buffer Overflow without null termination depending on the specific implementation details of the affected component. In terms of adversarial tactics, this exploit vector corresponds to techniques found in the MITRE ATT&CK framework for mobile platforms, particularly those related to privilege escalation via memory corruption or exploitation of kernel vulnerabilities. Attackers typically leverage such flaws after gaining initial access through other means, using them as a stepping stone to achieve full control over the device by bypassing sandbox restrictions and executing code with elevated privileges.
The resolution implemented in iOS 27.2 and iPadOS 27.2 addresses this issue by enhancing bounds checking mechanisms within the affected subsystems. These improvements ensure that memory access requests are rigorously validated against allocated buffer sizes before execution proceeds, thereby preventing any writes to unauthorized memory regions. For users and administrators, it is imperative to update device software immediately upon availability of these patches to mitigate the risk of exploitation. Security best practices also include maintaining strict app permissions policies and utilizing built-in security features like sandboxing and code signing verification to limit the potential impact if a vulnerability were present in third-party applications. Regular patch management remains the most effective defense against such memory corruption vulnerabilities that target core operating system components.