{ "document": { "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)", "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "summary", "text": "The products listed below contain an authentication bypass vulnerability that could allow an on-path attacker to take over the session of a legitimate user and execute arbitrary code with the privileges of the victim user.\n\nSiemens is preparing fixes and recommends specific mitigations for products where fixes are not or not yet available.", "title": "Summary" }, { "category": "general", "text": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity", "title": "General Recommendations" }, { "category": "general", "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "productcert@siemens.com", "name": "Siemens ProductCERT", "namespace": "https://www.siemens.com" }, "references": [ { "category": "self", "summary": "SSA-970803: Insecure User Authentication in SIMATIC SCADA and PCS 7 systems - HTML Version", "url": "https://cert-portal.siemens.com/productcert/html/ssa-970803.html" }, { "category": "self", "summary": "SSA-970803: Insecure User Authentication in SIMATIC SCADA and PCS 7 systems - CSAF Version", "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-970803.json" } ], "title": "SSA-970803: Insecure User Authentication in SIMATIC SCADA and PCS 7 systems", "tracking": { "current_release_date": "2026-11-10T00:00:00.000Z", "generator": { "engine": { "name": "Siemens ProductCERT CSAF Generator", "version": "1" } }, "id": "SSA-970803", "initial_release_date": "2026-11-10T00:00:00.000Z", "revision_history": [ { "date": "2026-11-10T00:00:00.000Z", "legacy_version": "1.0", "number": "1", "summary": "Publication Date" } ], "status": "interim", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC BATCH V9.1", "product_id": "1" } } ], "category": "product_name", "name": "SIMATIC BATCH V9.1" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC Information Server 2020", "product_id": "2" } } ], "category": "product_name", "name": "SIMATIC Information Server 2020" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC Information Server 2022", "product_id": "3" } } ], "category": "product_name", "name": "SIMATIC Information Server 2022" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC PCS 7 V9.1", "product_id": "4" } } ], "category": "product_name", "name": "SIMATIC PCS 7 V9.1" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC Process Historian 2020", "product_id": "5" } } ], "category": "product_name", "name": "SIMATIC Process Historian 2020" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC Process Historian 2022", "product_id": "6" } } ], "category": "product_name", "name": "SIMATIC Process Historian 2022" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC Runtime Professional V17", "product_id": "7" } } ], "category": "product_name", "name": "SIMATIC WinCC Runtime Professional V17" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC Runtime Professional V18", "product_id": "8" } } ], "category": "product_name", "name": "SIMATIC WinCC Runtime Professional V18" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC Runtime Professional V19", "product_id": "9" } } ], "category": "product_name", "name": "SIMATIC WinCC Runtime Professional V19" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC Runtime Professional V20", "product_id": "10" } } ], "category": "product_name", "name": "SIMATIC WinCC Runtime Professional V20" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC Runtime Professional V21", "product_id": "11" } } ], "category": "product_name", "name": "SIMATIC WinCC Runtime Professional V21" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC V7.5", "product_id": "12" } } ], "category": "product_name", "name": "SIMATIC WinCC V7.5" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC V8.0", "product_id": "13" } } ], "category": "product_name", "name": "SIMATIC WinCC V8.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC WinCC V8.1", "product_id": "14" } } ], "category": "product_name", "name": "SIMATIC WinCC V8.1" } ], "category": "vendor", "name": "Siemens" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-58114", "cwe": { "id": "CWE-1390", "name": "Weak Authentication" }, "notes": [ { "category": "description", "text": "Affected systems do not properly secure their remote user authentication with the deprecated NTLM protocol. This could allow unauthenticated remote attackers, who have achieved a machine in the middle position, to relay NTLM authentication and impersonate a legitimate user. The potential impact depends on the services that are accessible, e.g. a SQL server used by WinCC.", "title": "CVE Description" } ], "product_status": { "known_affected": [ "1", "10", "11", "12", "13", "14", "2", "3", "4", "5", "6", "7", "8", "9" ] }, "remediations": [ { "category": "mitigation", "details": "Customers can manually configure the SQL Server Database for encrypting communication as described in https://support.industry.siemens.com/cs/mdm/109818202?c=145291786635&lc=en-ID", "product_ids": [ "1", "10", "11", "12", "13", "14", "2", "3", "4", "5", "6", "7", "8", "9" ] }, { "category": "no_fix_planned", "details": "Currently no fix is planned", "product_ids": [ "1", "2", "3", "4", "5", "6" ] }, { "category": "none_available", "details": "Currently no fix is available", "product_ids": [ "10", "11", "12", "13", "14", "7", "8", "9" ] } ], "scores": [ { "cvss_v3": { "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "1", "10", "11", "12", "13", "14", "2", "3", "4", "5", "6", "7", "8", "9" ] } ], "title": "CVE-2026-58114" } ] }