{ "document": { "acknowledgments": [ { "organization": "Siemens ProductCERT", "summary": "reported this vulnerability to CISA." } ], "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Disclosure is not limited", "tlp": { "label": "WHITE", "url": "https://www.cisa.gov/news-events/news/traffic-light-protocol-tlp-definitions-and-usage" } }, "lang": "en", "notes": [ { "category": "summary", "text": "SIMATIC IoT2050 Advanced devices running Industrial OS with Node-RED installed contain a missing authentication vulnerability in the Node-RED HTTP interface that could allow an unauthenticated remote attacker to create malicious flows and execute arbitrary code on the underlying server with maximum privileges.\n\nSiemens has released a new version for SIMATIC IoT2050 Advanced and strongly recommends to update to the latest version.", "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" }, { "category": "legal_disclaimer", "text": "This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).", "title": "Legal Notice and Terms of Use" }, { "category": "other", "text": "This ICSA is a verbatim republication of Siemens ProductCERT SSA-834709 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided \"as-is\" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens ProductCERT directly for any questions regarding this advisory.", "title": "Advisory Conversion Disclaimer" }, { "category": "general", "text": "CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities.", "title": "Recommended Practices" }, { "category": "general", "text": "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.", "title": "Recommended Practices" }, { "category": "general", "text": "Locate control system networks and remote devices behind firewalls and isolate them from business networks.", "title": "Recommended Practices" }, { "category": "general", "text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.", "title": "Recommended Practices" }, { "category": "general", "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.", "title": "Recommended Practices" }, { "category": "other", "text": "Chemical, Critical Manufacturing, Energy, Transportation Systems", "title": "Critical infrastructure sectors" }, { "category": "other", "text": "Worldwide", "title": "Countries/areas deployed" }, { "category": "other", "text": "Germany", "title": "Company headquarters location" } ], "publisher": { "category": "other", "contact_details": "central@cisa.dhs.gov", "name": "CISA", "namespace": "https://www.cisa.gov/" }, "references": [ { "category": "self", "summary": "SSA-834709: Missing Authentication Vulnerability in Node-RED on SIMATIC IoT2050 Advanced with Industrial OS - CSAF Version", "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-834709.json" }, { "category": "self", "summary": "SSA-834709: Missing Authentication Vulnerability in Node-RED on SIMATIC IoT2050 Advanced with Industrial OS - HTML Version", "url": "https://cert-portal.siemens.com/productcert/html/ssa-834709.html" }, { "category": "self", "summary": "ICS Advisory ICSA-26-237-03 JSON", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-237-03.json" }, { "category": "self", "summary": "ICS Advisory ICSA-26-237-03 - Web Version", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-03" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/topics/industrial-control-systems" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b" } ], "title": "Siemens SIMATIC IoT2050 Advanced", "tracking": { "current_release_date": "2026-08-25T06:00:00.000000Z", "generator": { "date": "2026-08-24T18:48:46.232482Z", "engine": { "name": "CISA CSAF Generator", "version": "1.5.0" } }, "id": "ICSA-26-237-03", "initial_release_date": "2026-08-11T00:00:00.000000Z", "revision_history": [ { "date": "2026-08-11T00:00:00.000000Z", "legacy_version": "Initial", "number": "1", "summary": "Publication Date" }, { "date": "2026-08-25T06:00:00.000000Z", "legacy_version": "CISA Republication", "number": "2", "summary": "Initial CISA Republication of Siemens ProductCERT SSA-834709 advisory" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<4.3.4.1", "product": { "name": "SIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) < V4.3.4.1 running Industrial OS with Node-RED installed", "product_id": "CSAFPID-0001", "product_identification_helper": { "model_numbers": [ "6ES7647-0BA00-1YA2" ] } } } ], "category": "product_name", "name": "SIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2)" } ], "category": "vendor", "name": "Siemens" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-58115", "cwe": { "id": "CWE-306", "name": "Missing Authentication for Critical Function" }, "notes": [ { "category": "description", "text": "Affected devices do not enforce authentication on the Node-RED HTTP interface, allowing unauthenticated access to programming nodes that are capable of executing system commands on the server.\r\nThis could allow an unauthenticated remote attacker to create malicious flows through the HTTP interface in order to execute arbitrary code on the underlying server with maximum privileges.", "title": "CVE Description" } ], "product_status": { "known_affected": [ "CSAFPID-0001" ] }, "references": [ { "category": "external", "summary": "www.cve.org", "url": "https://www.cve.org/CVERecord?id=CVE-2026-58115" }, { "category": "external", "summary": "cwe.mitre.org", "url": "https://cwe.mitre.org/data/definitions/306.html" }, { "category": "external", "summary": "www.first.org", "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" } ], "remediations": [ { "category": "mitigation", "details": "Harden the Node-RED installation (see Node-RED User Guide)", "product_ids": [ "CSAFPID-0001" ] }, { "category": "mitigation", "details": "Uninstall Node-RED", "product_ids": [ "CSAFPID-0001" ] }, { "category": "vendor_fix", "details": "Update to V4.3.4.1 or later version", "product_ids": [ "CSAFPID-0001" ], "url": "https://support.industry.siemens.com/cs/ww/en/view/109741799/" } ], "scores": [ { "cvss_v3": { "baseScore": 10.0, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1" }, "products": [ "CSAFPID-0001" ] } ], "title": "CVE-2026-58115" } ] }