Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
The following code is for security research and authorized testing only.
python
#include <windows.h>
#include <iostream>
#include <thread>
// PoC Concept for Race Condition in fdwsd.dll
// This is a simulation structure for demonstration purposes.
// Simulate the vulnerable resource check
void CheckResource() {
// The service checks if a resource pointer is valid or accessible
// Sleep(1); // Simulate processing time creating a window
}
// Simulate the resource usage
void UseResource() {
// The service uses the resource here
// If an attacker modifies the resource between Check and Use,
// the service performs the action on the attacker's controlled resource.
}
// Attacker thread function trying to win the race
void ExploitThread() {
while (true) {
// Attempt to swap the resource object in memory
// This requires precise timing and knowledge of memory layout
//
// Example: Replace a legitimate file handle with a handle to a sensitive system file
// or a malicious DLL path.
// ... Race condition logic ...
break;
}
}
int main() {
std::cout << "Starting PoC simulation for CVE-2026-32086..." << std::endl;
// In a real scenario, the attacker would trigger the vulnerable service
// while running this thread to race against the service's operations.
std::thread t1(ExploitThread);
// Simulate the service flow
CheckResource();
//
UseResource();
t1.join();
std::cout << "PoC simulation finished." << std::endl;
return 0;
}