CVE-2026-109520 in iGameCenter
Summary
by MITRE • 10/13/2026
A flaw has been found in Colorful iGameCenter 2.0.0.82. Affected by this vulnerability is the function MmMapIoSpace in the library AMDRyzenMasterDriver.sys of the component Dispatch Handler. This manipulation of the argument SystemBuffer causes privilege defined with unsafe actions. The attack needs to be launched locally. The vendor was contacted early about this disclosure but did not respond in any way.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 10/13/2026
The vulnerability identified in Colorful iGameCenter version 2.0.0.82 centers on a critical memory management flaw within the AMDRyzenMasterDriver.sys kernel-mode driver, specifically affecting the MmMapIoSpace function invoked by its Dispatch Handler component. This issue represents a classic instance of improper input validation leading to unsafe memory operations in a privileged context. The core technical failure lies in how the system buffer argument is processed during I/O control requests sent from user-space applications to this kernel driver. When an attacker provides manipulated or malformed data within the SystemBuffer parameter, it triggers undefined behavior or out-of-bounds access patterns that bypass standard security checks designed for memory isolation and integrity.
From a technical perspective, MmMapIoSpace is responsible for mapping physical I/O space into virtual address space, allowing drivers to communicate with hardware devices. When this function receives corrupted input due to the lack of rigorous bounds checking or type validation on SystemBuffer, it can result in arbitrary read/write capabilities within kernel memory. This flaw aligns closely with CWE-120 Buffer Overflow and CWE-787 Out-of-bounds Write vulnerabilities, as the manipulation allows an actor to overwrite critical data structures or execute code outside intended boundaries. The absence of proper sanitization means that carefully crafted input can corrupt kernel state, leading to a complete compromise of system integrity.
The operational impact of this vulnerability is severe due to its local execution requirement and high privilege escalation potential. Because the flaw resides in a kernel driver loaded with SYSTEM-level privileges, successful exploitation grants an attacker full control over the operating system. This includes the ability to install rootkits, disable security software, steal sensitive credentials stored in memory, or pivot to other systems on the network if additional lateral movement vectors exist. The requirement for local access means that physical access to the machine or a compromised user account with sufficient permissions is necessary to initiate the attack vector, but once achieved, the resulting privilege escalation from standard user rights to kernel-level dominance is immediate and difficult to detect without specialized monitoring tools.
This incident highlights significant gaps in vendor security practices, particularly regarding third-party component integration and driver development standards. The fact that Colorful did not respond to early disclosure attempts suggests a lack of established vulnerability management processes or responsible disclosure policies for their software ecosystem. Such drivers often operate with minimal oversight compared to core operating system components, making them attractive targets for exploitation by threat actors seeking persistent access.
Mitigation strategies must focus on both immediate remediation and long-term security hardening. Users should immediately uninstall Colorful iGameCenter version 2.0.0.82 if it is not strictly necessary for their hardware configuration, as the associated AMDRyzenMasterDriver.sys file poses a direct risk to system stability and security. If removal is not feasible due to specific overclocking or monitoring needs, users should apply strict application whitelisting policies using tools like Windows Defender Application Control or third-party endpoint protection solutions that can block unsigned or unapproved kernel driver loads. Additionally, enabling Kernel DMA Protection via Virtualization-Based Security in BIOS/UEFI settings can help mitigate the impact of such vulnerabilities by restricting direct memory access for peripheral devices and drivers.
From a broader industry standard perspective, this vulnerability underscores the importance of adhering to CWE-20 Improper Input Validation guidelines during driver development. Developers must implement rigorous validation routines before passing user-supplied buffers into kernel functions like MmMapIoSpace. Furthermore, adopting principles from MITRE ATT&CK technique T1055 Process Injection or T1068 Exploitation for Privilege Escalation can help security teams monitor for anomalous driver behavior and memory access patterns that indicate exploitation attempts are underway. Until a patched version is released by the vendor, treating this component as untrusted and restricting its execution environment remains the most effective defensive posture against potential local privilege escalation attacks.