{ "document": { "acknowledgments": [ { "names": [ "Michael Heinzl" ], "summary": "reported this vulnerability to Siemens ProductCERT" }, { "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": "Simcenter Nastran is affected by a stack overflow vulnerability that could be triggered when an application binary reads arbitrary string as a file argument. If a user is tricked to run one of the impacted application binary with a malicious string, an attacker could leverage the vulnerability to perform remote code execution in the context of the current process.\n\nSiemens has released new versions for the affected products and recommends to update to the latest versions.", "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-069220 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": "Critical Manufacturing, Defense Industrial Base, Energy, Healthcare and Public Health, 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-069220: Stack Overflow Vulnerability in Simcenter Nastran Before V2606 - CSAF Version", "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-069220.json" }, { "category": "self", "summary": "SSA-069220: Stack Overflow Vulnerability in Simcenter Nastran Before V2606 - HTML Version", "url": "https://cert-portal.siemens.com/productcert/html/ssa-069220.html" }, { "category": "self", "summary": "ICS Advisory ICSA-26-230-02 JSON", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-230-02.json" }, { "category": "self", "summary": "ICS Advisory ICSA-26-230-02 - Web Version", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-230-02" }, { "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 Simcenter Nastran", "tracking": { "current_release_date": "2026-08-18T06:00:00.000000Z", "generator": { "date": "2026-08-17T15:53:43.605758Z", "engine": { "name": "CISA CSAF Generator", "version": "1.5.0" } }, "id": "ICSA-26-230-02", "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": "2026-08-13T00:00:00.000000Z", "legacy_version": "Additional Release 1", "number": "2", "summary": "Added Simcenter Femap with fix" }, { "date": "2026-08-18T06:00:00.000000Z", "legacy_version": "CISA Republication", "number": "3", "summary": "Initial CISA Republication of Siemens ProductCERT SSA-069220 advisory" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<2606", "product": { "name": "Simcenter Femap < V2606", "product_id": "CSAFPID-0001" } } ], "category": "product_name", "name": "Simcenter Femap" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<2606", "product": { "name": "Simcenter Nastran < V2606", "product_id": "CSAFPID-0002" } } ], "category": "product_name", "name": "Simcenter Nastran" } ], "category": "vendor", "name": "Siemens" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-59086", "cwe": { "id": "CWE-121", "name": "Stack-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "The affected applications contain a stack overflow vulnerability while parsing specially strings as argument for one of the application binaries. This could allow an attacker to execute code in the context of the current process.", "title": "CVE Description" } ], "product_status": { "known_affected": [ "CSAFPID-0001", "CSAFPID-0002" ] }, "references": [ { "category": "external", "summary": "www.cve.org", "url": "https://www.cve.org/CVERecord?id=CVE-2026-59086" }, { "category": "external", "summary": "cwe.mitre.org", "url": "https://cwe.mitre.org/data/definitions/121.html" }, { "category": "external", "summary": "www.first.org", "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H" } ], "remediations": [ { "category": "vendor_fix", "details": "Update to V2606 or later version", "product_ids": [ "CSAFPID-0001", "CSAFPID-0002" ], "url": "https://support.sw.siemens.com/product/275652363/" } ], "scores": [ { "cvss_v3": { "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "CSAFPID-0001", "CSAFPID-0002" ] } ], "title": "CVE-2026-59086" } ] }