ICSA-22-104-12: Siemens SIMATIC S7-400
CISA advisory · released 2022-04-12
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 3, 2023-04-11 (final)
CISA's summary
Summary: SIMATIC S7-400 CPU devices contain an input validation vulnerability that could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations. Siemens has released an update for SIMATIC S7-410 V10 CPU family and SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants for both) and recommends to update to the latest version. Siemens is preparing further updates and recommends specific countermeasures for products where updates are not yet available.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC S7-400 CPU 412-1 DP V7 (6ES7412-1XJ07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 412-2 DP V7 (6ES7412-2XK07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 412-2 PN/DP V7 (6ES7412-2EK07-0AB0) | vers:all/<V7.0.3 |
| Siemens | SIMATIC S7-400 CPU 414-2 DP V7 (6ES7414-2XL07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 414-3 DP V7 (6ES7414-3XM07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0) | vers:all/<V7.0.3 |
| Siemens | SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0) | vers:all/<V7.0.3 |
| Siemens | SIMATIC S7-400 CPU 416-2 DP V7 (6ES7416-2XP07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 416-3 DP V7 (6ES7416-3XS07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0) | vers:all/<V7.0.3 |
| Siemens | SIMATIC S7-400 CPU 416F-2 DP V7 (6ES7416-2FP07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0) | vers:all/<V7.0.3 |
| Siemens | SIMATIC S7-400 CPU 417-4 DP V7 (6ES7417-4XT07-0AB0) | vers:all/* |
| Siemens | SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) | vers:all/<V6.0.10 |
| Siemens | SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) | vers:all/<V10.1 |
| Siemens | SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) | vers:all/<V8.2.3 |
| Siemens | SIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0) | vers:all/<V7.0.3 |
| Siemens | SIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0) | vers:all/<V7.0.3 |
| Siemens | SIPLUS S7-400 CPU 416-3 V7 (6AG1416-3XS07-7AB0) | vers:all/* |
| Siemens | SIPLUS S7-400 CPU 417-4 V7 (6AG1417-4XT07-7AB0) | vers:all/* |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2021-40368 — CVE-2021-40368 · CWE-119
Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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