CVE-2026-9492 in Control Center
Summary
by MITRE • 07/13/2026
The MBStorage DRAM lighting control module within Gigabyte Control Center (GCC) developed by GIGABYTE Technology has an Improper Access Control vulnerability. Authenticated local attackers can send specific IOCTL commands through the driver MyPortIO_x64.sys bundled with the module, thereby arbitrarily reading and writing physical memory and obtaining kernel-level privileges.
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Analysis
by VulDB Data Team • 07/13/2026
The MBStorage DRAM lighting control module within Gigabyte Control Center represents a critical security weakness that undermines the overall system integrity of affected devices. This vulnerability exists within the MyPortIO_x64.sys driver which is part of the broader Gigabyte Control Center ecosystem designed for hardware management and customization. The flaw manifests as improper access control mechanisms that fail to adequately validate input parameters and authentication states when processing IOCTL (Input/Output Control) commands. Attackers who have already gained local user privileges can exploit this weakness by directly interacting with the vulnerable driver through specific command sequences, bypassing normal security boundaries that should protect kernel-level system resources.
The technical implementation of this vulnerability stems from insufficient validation within the driver's ioctl handling routines where the MyPortIO_x64.sys component fails to properly check the legitimacy of incoming requests before executing memory operations. This allows authenticated local users to craft malicious IOCTL commands that directly interface with physical memory addresses, enabling arbitrary read and write operations at the kernel level. The vulnerability specifically affects the MBStorage DRAM lighting control functionality but demonstrates a broader design flaw in how the driver manages privilege escalation and resource access controls. According to CWE classification, this represents a weakness categorized under CWE-284 Access Control Bypass, where insufficient access control mechanisms allow unauthorized operations on protected resources.
The operational impact of this vulnerability is severe as it provides attackers with complete kernel-level privileges without requiring additional exploitation techniques or elevated user rights. Once an attacker successfully sends the malicious IOCTL commands through the vulnerable driver, they gain unrestricted access to physical memory locations, enabling potential data exfiltration, system modification, or further privilege escalation attacks. This creates a persistent backdoor that can be leveraged for advanced persistent threats and allows attackers to manipulate critical system components including memory management structures, device drivers, and kernel objects. The vulnerability affects systems running Gigabyte Control Center software where the MBStorage lighting control module is active, potentially compromising thousands of devices across various computing platforms.
Mitigation strategies should focus on immediate patching procedures provided by GIGABYTE to address the driver-level access control flaws. Organizations must ensure all affected systems receive updates that properly validate IOCTL parameters and implement stricter kernel-mode access controls for the MyPortIO_x64.sys driver. Additional protective measures include implementing application whitelisting policies to restrict execution of unauthorized code, monitoring for suspicious IOCTL activity patterns, and conducting regular security assessments of system drivers and kernel-level components. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation through driver manipulation and kernel exploitation. System administrators should also consider reducing the attack surface by disabling unnecessary hardware control features when not actively required, implementing least-privilege principles for user accounts, and maintaining detailed logging of driver interactions for forensic analysis purposes.