CVE-2026-64722 in iOS
Summary
by MITRE • 07/28/2026
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a 3D model may result in disclosure of process memory.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a classic buffer overflow condition that emerged from inadequate memory management practices within Apple's operating system frameworks. The flaw specifically manifests when processing 3D model data structures, where insufficient bounds checking allows maliciously crafted input to overwrite adjacent memory regions. The issue stems from improper validation of input parameters during the parsing of three-dimensional geometric data, creating opportunities for attackers to manipulate memory layout and potentially execute arbitrary code or extract sensitive information from process memory spaces.
The technical implementation of this vulnerability aligns with CWE-121, which describes unsafe array indexing conditions that can lead to buffer overflow scenarios. When a 3D model is processed, the system allocates memory buffers based on assumptions about input size and structure. However, if the input exceeds expected parameters or contains malformed data, the memory allocation routines fail to properly validate boundaries, allowing writes to extend beyond allocated buffer limits. This condition creates a pathway for information disclosure attacks where adjacent memory segments containing sensitive process data can be accessed and potentially exfiltrated.
From an operational perspective, this vulnerability poses significant risks to users of affected Apple operating systems including iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, and macOS Tahoe 26.6. The attack surface is particularly concerning as it operates within legitimate application contexts where 3D model processing occurs naturally, making detection difficult for security monitoring systems. The disclosed process memory could contain cryptographic keys, user credentials, application state information, or other sensitive data that could be leveraged for further attacks within the compromised system.
The remediation efforts implemented by Apple focus on strengthening memory handling mechanisms through enhanced bounds checking and improved input validation procedures. These changes align with defensive programming practices recommended in the ATT&CK framework under the technique of T1059.007 for command and scripting interpreter, as they address underlying code vulnerabilities that could enable similar attack vectors. The fix involves modifying the memory allocation routines to properly validate input parameters before processing 3D model data, ensuring that buffer limits are strictly enforced regardless of input characteristics.
Organizations should prioritize immediate deployment of these security updates across all affected systems to mitigate potential exploitation risks. Security teams should monitor for any unusual memory access patterns or suspicious file processing activities that might indicate attempted exploitation of this vulnerability. Additional defensive measures including network monitoring for unusual data exfiltration patterns and application whitelisting controls can provide additional layers of protection while the system updates are being deployed. The vulnerability demonstrates the critical importance of robust input validation in multimedia processing applications where complex data structures can create unexpected memory access patterns.