{ "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": "The products listed below contain a vulnerability that could allow an attacker to perform an out-of-bound read, potentially leading to information disclosure or denial of service of the TPM.\n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures 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" }, { "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-628843 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": "other", "text": "Critical Manufacturing", "title": "Critical infrastructure sectors" }, { "category": "other", "text": "Worldwide", "title": "Countries/areas deployed" }, { "category": "other", "text": "Germany", "title": "Company headquarters location" }, { "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" } ], "publisher": { "category": "other", "contact_details": "central@cisa.dhs.gov", "name": "CISA", "namespace": "https://www.cisa.gov/" }, "references": [ { "category": "self", "summary": "SSA-628843: Out of Bound Read Vulnerability in TPM 2.0 - CSAF Version", "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-628843.json" }, { "category": "self", "summary": "SSA-628843: Out of Bound Read Vulnerability in TPM 2.0 - HTML Version", "url": "https://cert-portal.siemens.com/productcert/html/ssa-628843.html" }, { "category": "self", "summary": "ICS Advisory ICSA-26-111-01 JSON", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-111-01.json" }, { "category": "self", "summary": "ICS Advisory ICSA-26-111-01 - Web Version", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-111-01" }, { "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 TPM 2.0", "tracking": { "current_release_date": "2026-04-21T06:00:00.000000Z", "generator": { "date": "2026-04-20T17:13:32.865199Z", "engine": { "name": "CISA CSAF Generator", "version": "1.5.0" } }, "id": "ICSA-26-111-01", "initial_release_date": "2026-04-14T00:00:00.000000Z", "revision_history": [ { "date": "2026-04-14T00:00:00.000000Z", "legacy_version": "Initial", "number": "1", "summary": "Publication Date" }, { "date": "2026-04-21T06:00:00.000000Z", "legacy_version": "CISA Republication", "number": "2", "summary": "Initial CISA Republication of Siemens ProductCERT SSA-628843 advisory" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC CN 4100", "product_id": "CSAFPID-0001" } } ], "category": "product_name", "name": "SIMATIC CN 4100" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC Field PG M5", "product_id": "CSAFPID-0002" } } ], "category": "product_name", "name": "SIMATIC Field PG M5" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC Field PG M6", "product_id": "CSAFPID-0003" } } ], "category": "product_name", "name": "SIMATIC Field PG M6" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<29.01.09", "product": { "name": "SIMATIC IPC BX-32A", "product_id": "CSAFPID-0004" } } ], "category": "product_name", "name": "SIMATIC IPC BX-32A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<29.01.09", "product": { "name": "SIMATIC IPC BX-39A", "product_id": "CSAFPID-0005" } } ], "category": "product_name", "name": "SIMATIC IPC BX-39A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<32.01.09", "product": { "name": "SIMATIC IPC BX-56A", "product_id": "CSAFPID-0006" } } ], "category": "product_name", "name": "SIMATIC IPC BX-56A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<32.01.09", "product": { "name": "SIMATIC IPC BX-59A", "product_id": "CSAFPID-0007" } } ], "category": "product_name", "name": "SIMATIC IPC BX-59A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<30.01.10", "product": { "name": "SIMATIC IPC MD-57A", "product_id": "CSAFPID-0008" } } ], "category": "product_name", "name": "SIMATIC IPC MD-57A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<29.01.09", "product": { "name": "SIMATIC IPC PX-32A", "product_id": "CSAFPID-0009" } } ], "category": "product_name", "name": "SIMATIC IPC PX-32A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<29.01.09", "product": { "name": "SIMATIC IPC PX-39A", "product_id": "CSAFPID-0010" } } ], "category": "product_name", "name": "SIMATIC IPC PX-39A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<29.01.09", "product": { "name": "SIMATIC IPC PX-39A PRO", "product_id": "CSAFPID-0011" } } ], "category": "product_name", "name": "SIMATIC IPC PX-39A PRO" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<34.01.02", "product": { "name": "SIMATIC IPC RW-528A", "product_id": "CSAFPID-0012" } } ], "category": "product_name", "name": "SIMATIC IPC RW-528A" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<34.01.02", "product": { "name": "SIMATIC IPC RW-548A", "product_id": "CSAFPID-0013" } } ], "category": "product_name", "name": "SIMATIC IPC RW-548A" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC IPC227E", "product_id": "CSAFPID-0014" } } ], "category": "product_name", "name": "SIMATIC IPC227E" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC IPC277E", "product_id": "CSAFPID-0015" } } ], "category": "product_name", "name": "SIMATIC IPC277E" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<21.01.20", "product": { "name": "SIMATIC IPC427E", "product_id": "CSAFPID-0016" } } ], "category": "product_name", "name": "SIMATIC IPC427E" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<21.01.20", "product": { "name": "SIMATIC IPC477E", "product_id": "CSAFPID-0017" } } ], "category": "product_name", "name": "SIMATIC IPC477E" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<21.01.20", "product": { "name": "SIMATIC IPC477E PRO", "product_id": "CSAFPID-0018" } } ], "category": "product_name", "name": "SIMATIC IPC477E PRO" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC IPC627E", "product_id": "CSAFPID-0019" } } ], "category": "product_name", "name": "SIMATIC IPC627E" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC IPC647E", "product_id": "CSAFPID-0020" } } ], "category": "product_name", "name": "SIMATIC IPC647E" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC IPC677E", "product_id": "CSAFPID-0021" } } ], "category": "product_name", "name": "SIMATIC IPC677E" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC IPC847E", "product_id": "CSAFPID-0022" } } ], "category": "product_name", "name": "SIMATIC IPC847E" }, { "branches": [ { "category": "product_version_range", "name": "vers:all/*", "product": { "name": "SIMATIC ITP1000", "product_id": "CSAFPID-0023" } } ], "category": "product_name", "name": "SIMATIC ITP1000" }, { "branches": [ { "category": "product_version_range", "name": "vers:intdot/<21.01.20", "product": { "name": "SIPLUS IPC427E", "product_id": "CSAFPID-0024" } } ], "category": "product_name", "name": "SIPLUS IPC427E" } ], "category": "vendor", "name": "Siemens" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-2884", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "summary", "text": "TCG TPM2.0 Reference implementation's CryptHmacSign helper function is vulnerable to Out-of-Bounds read due to the lack of validation the signature scheme with the signature key's algorithm. See Errata Revision 1.83 and advisory TCGVRT0009 for TCG standard TPM2.0", "title": "Summary" } ], "product_status": { "known_affected": [ "CSAFPID-0001", "CSAFPID-0002", "CSAFPID-0003", "CSAFPID-0004", "CSAFPID-0005", "CSAFPID-0006", "CSAFPID-0007", "CSAFPID-0008", "CSAFPID-0009", "CSAFPID-0010", "CSAFPID-0011", "CSAFPID-0012", "CSAFPID-0013", "CSAFPID-0014", "CSAFPID-0015", "CSAFPID-0016", "CSAFPID-0017", "CSAFPID-0018", "CSAFPID-0019", "CSAFPID-0020", "CSAFPID-0021", "CSAFPID-0022", "CSAFPID-0023", "CSAFPID-0024" ] }, "references": [ { "category": "external", "summary": "www.cve.org", "url": "https://www.cve.org/CVERecord?id=CVE-2025-2884" }, { "category": "external", "summary": "cwe.mitre.org", "url": "https://cwe.mitre.org/data/definitions/125.html" }, { "category": "external", "summary": "www.first.org", "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H" } ], "remediations": [ { "category": "no_fix_planned", "details": "Currently no fix is planned", "product_ids": [ "CSAFPID-0001", "CSAFPID-0014", "CSAFPID-0015" ] }, { "category": "none_available", "details": "Currently no fix is available", "product_ids": [ "CSAFPID-0002", "CSAFPID-0003", "CSAFPID-0019", "CSAFPID-0020", "CSAFPID-0021", "CSAFPID-0022", "CSAFPID-0023" ] }, { "category": "vendor_fix", "details": "Update to V21.01.20 or later version", "product_ids": [ "CSAFPID-0016", "CSAFPID-0017", "CSAFPID-0018", "CSAFPID-0024" ], "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/" }, { "category": "vendor_fix", "details": "Update to V29.01.09 or later version", "product_ids": [ "CSAFPID-0004", "CSAFPID-0005", "CSAFPID-0009", "CSAFPID-0010", "CSAFPID-0011" ], "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/" }, { "category": "vendor_fix", "details": "Update to V30.01.10 or later version", "product_ids": [ "CSAFPID-0008" ], "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/" }, { "category": "vendor_fix", "details": "Update to V32.01.09 or later version", "product_ids": [ "CSAFPID-0006", "CSAFPID-0007" ], "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/" }, { "category": "vendor_fix", "details": "Update to V34.01.02 or later version", "product_ids": [ "CSAFPID-0012", "CSAFPID-0013" ], "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/" } ], "scores": [ { "cvss_v3": { "baseScore": 6.6, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H", "version": "3.1" }, "products": [ "CSAFPID-0001", "CSAFPID-0002", "CSAFPID-0003", "CSAFPID-0004", "CSAFPID-0005", "CSAFPID-0006", "CSAFPID-0007", "CSAFPID-0008", "CSAFPID-0009", "CSAFPID-0010", "CSAFPID-0011", "CSAFPID-0012", "CSAFPID-0013", "CSAFPID-0014", "CSAFPID-0015", "CSAFPID-0016", "CSAFPID-0017", "CSAFPID-0018", "CSAFPID-0019", "CSAFPID-0020", "CSAFPID-0021", "CSAFPID-0022", "CSAFPID-0023", "CSAFPID-0024" ] } ], "title": "CVE-2025-2884" } ] }