CVE-2026-65395 in iOS
Summary
by MITRE • 09/15/2026
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27. Processing a maliciously crafted image may result in memory corruption.
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Analysis
by VulDB Data Team • 09/15/2026
The vulnerability described involves an out-of-bounds write condition within the image processing subsystem of Apple's operating systems, including iOS, iPadOS, macOS, tvOS, and visionOS. This type of flaw typically arises when software fails to properly validate input data before writing it to memory buffers. In this specific case, the application processes images that have been maliciously crafted to exploit weaknesses in bounds checking logic. When such a malformed image is processed, the system attempts to write data beyond the allocated boundaries of a buffer, leading to memory corruption. This behavior aligns with CWE-787, which classifies out-of-bounds writes as critical security flaws because they allow attackers to overwrite adjacent memory locations, potentially altering program execution flow or corrupting sensitive data structures.
The operational impact of this vulnerability is significant due to the potential for arbitrary code execution. Memory corruption resulting from an out-of-bounds write can be leveraged by a threat actor to execute malicious code with the privileges of the affected application. If the image processing component runs with elevated permissions, such as in system services or sandboxed environments that have access to sensitive resources, this could lead to full device compromise. The vulnerability is categorized under ATT&CK technique T1203, which covers exploitation for client execution, specifically targeting applications that handle untrusted input like images. Attackers might distribute maliciously crafted image files through phishing emails, compromised websites, or other vectors where users are likely to open them using default system viewers or third-party apps that rely on the same underlying frameworks.
Apple has addressed this issue by implementing improved bounds checking mechanisms within the affected components across multiple operating systems and versions. The fix ensures that input data is rigorously validated against buffer limits before any write operations occur, thereby preventing memory corruption. This remediation strategy directly mitigates the risk associated with CWE-787 by enforcing strict boundary constraints during image processing tasks. Users are advised to update their devices to iOS 26.7 and iPadOS 26.7, as well as iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27 to ensure protection against this specific exploit vector.
From a defensive perspective, organizations should prioritize patching these operating systems across all managed devices to eliminate the attack surface presented by this vulnerability. Additionally, implementing application whitelisting or restricting the execution of untrusted code can provide an additional layer of defense in depth. Security monitoring solutions should be configured to detect anomalous memory access patterns or unexpected process behavior that may indicate exploitation attempts. Regular security audits and penetration testing focused on input validation weaknesses will help identify similar vulnerabilities before they are exploited by malicious actors, ensuring a more resilient posture against memory corruption attacks.