CVE-2026-27920 Windows UPnP权限提升漏洞

/* * PoC Concept for Untrusted Pointer Dereference * This is a conceptual simulation demonstrating the vulnerability logic. * It triggers a crash by passing an invalid pointer to the vulnerable API. */ #include <windows.h> #include <iostream> // Vulnerable Function Simulation void TriggerVulnerability(PVOID maliciousPtr) { // Simulate the lack of check in the UPnP Device Host // Dereferencing the untrusted pointer causes an access violation DWORD value = *(DWORD*)maliciousPtr; printf("Dereferenced value: 0x%x\n", value); } int main() { std::cout << "[+] PoC for CVE-2026-27920 (Local Privilege Escalation)" << std::endl; // Prepare an invalid memory address (e.g., 0x41414141) PVOID invalidPointer = (PVOID)0x41414141; std::cout << "[+] Triggering dereference at: 0x" << std::hex << invalidPointer << std::endl; __try { TriggerVulnerability(invalidPointer); } __except (EXCEPTION_EXECUTE_HANDLER) { std::cout << "[-] Access Violation caught. Vulnerability confirmed." << std::endl; } return 0; }