CVE-2026-42896 Windows DWM权限提升漏洞

#include <windows.h> #include <iostream> // Proof of Concept for Integer Overflow in Windows DWM Core Library // This is a simulation of the trigger logic. void TriggerOverflow() { // Simulate the vulnerable calculation size_t count = 0x100000000; // Large value size_t element_size = 0x10; // Integer overflow occurs here if not checked properly // 0x100000000 * 0x10 wraps to 0 in a 32-bit context or similar size_t total_size = count * element_size; if (total_size == 0) { std::cout << "[+] Integer overflow triggered: Total size is 0." << std::endl; // Attempt to allocate memory or call the vulnerable API // In a real scenario, this would lead to a heap overflow or OOB write // ExploitPayload(); } else { std::cout << "[-] Overflow not triggered." << std::endl; } } int main() { std::cout << "[*] Starting PoC for CVE-2026-42896..." << std::endl; TriggerOverflow(); return 0; }