ICSA-26-111-01: Siemens TPM 2.0
CISA advisory · released 2026-04-14
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2026-04-21 (final)
CISA's summary
Summary: 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. Siemens 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.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC CN 4100 | vers:all/* |
| Siemens | SIMATIC Field PG M5 | vers:all/* |
| Siemens | SIMATIC Field PG M6 | vers:all/* |
| Siemens | SIMATIC IPC BX-32A | vers:intdot/<29.01.09 |
| Siemens | SIMATIC IPC BX-39A | vers:intdot/<29.01.09 |
| Siemens | SIMATIC IPC BX-56A | vers:intdot/<32.01.09 |
| Siemens | SIMATIC IPC BX-59A | vers:intdot/<32.01.09 |
| Siemens | SIMATIC IPC MD-57A | vers:intdot/<30.01.10 |
| Siemens | SIMATIC IPC PX-32A | vers:intdot/<29.01.09 |
| Siemens | SIMATIC IPC PX-39A | vers:intdot/<29.01.09 |
| Siemens | SIMATIC IPC PX-39A PRO | vers:intdot/<29.01.09 |
| Siemens | SIMATIC IPC RW-528A | vers:intdot/<34.01.02 |
| Siemens | SIMATIC IPC RW-548A | vers:intdot/<34.01.02 |
| Siemens | SIMATIC IPC227E | vers:all/* |
| Siemens | SIMATIC IPC277E | vers:all/* |
| Siemens | SIMATIC IPC427E | vers:intdot/<21.01.20 |
| Siemens | SIMATIC IPC477E | vers:intdot/<21.01.20 |
| Siemens | SIMATIC IPC477E PRO | vers:intdot/<21.01.20 |
| Siemens | SIMATIC IPC627E | vers:all/* |
| Siemens | SIMATIC IPC647E | vers:all/* |
| Siemens | SIMATIC IPC677E | vers:all/* |
| Siemens | SIMATIC IPC847E | vers:all/* |
| Siemens | SIMATIC ITP1000 | vers:all/* |
| Siemens | SIPLUS IPC427E | vers:intdot/<21.01.20 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2025-2884 — CVE-2025-2884 · CWE-125
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
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reported this vulnerability to CISA.
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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