Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.
The following code is for security research and authorized testing only.
python
#include <windows.h>
#include <stdio.h>
// Conceptual PoC for CVE-2026-23670
// Vulnerability: Untrusted pointer dereference in Windows VBS Enclave
// This code simulates the logic of dereferencing a controlled pointer.
// Simulate the vulnerable VBS Enclave function
void VulnerableEnclaveFunction(void* untrusted_input) {
printf("[*] VBS Enclave processing input at: %p\n", untrusted_input);
// FLAW: The code dereferences the pointer without validating if it points to a valid/safe memory region
// In a real scenario, this could be a function pointer or a structure pointer in kernel space.
int data = *(int*)untrusted_input;
printf("[+] Data read: 0x%x\n", data);
}
int main() {
printf("--- CVE-2026-23670 PoC Simulation ---\n");
// Attacker controls a memory location
char attacker_controlled_buffer[4] = {0x41, 0x41, 0x41, 0x41};
// Attacker passes this pointer to the vulnerable interface
// Requires High Privileges (PR:H) and Local Access (AV:L)
VulnerableEnclaveFunction((void*)attacker_controlled_buffer);
// If successful, the attacker might bypass security checks or leak memory
printf("[!] Attempt to bypass security feature completed.\n");
return 0;
}