CVE-2021-40368
Siemens · published 2022-04-12
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Siemens AG via the CVE Program.
A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). 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.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SIMATIC S7-400 CPU 412-1 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 412-2 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 412-2 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIMATIC S7-400 CPU 414-2 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 414-3 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 414-3 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIMATIC S7-400 CPU 414F-3 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIMATIC S7-400 CPU 416-2 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 416-3 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 416-3 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIMATIC S7-400 CPU 416F-2 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 CPU 416F-3 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIMATIC S7-400 CPU 417-4 DP V7 | All versions: affected |
| Siemens | SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) | All versions < V6.0.10: affected |
| Siemens | SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) | All versions < V10.1: affected |
| Siemens | SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) | All versions < V8.2.3: affected |
| Siemens | SIPLUS S7-400 CPU 414-3 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIPLUS S7-400 CPU 416-3 PN/DP V7 | All versions < V7.0.3: affected |
| Siemens | SIPLUS S7-400 CPU 416-3 V7 | All versions: affected |
| Siemens | SIPLUS S7-400 CPU 417-4 V7 | All versions: affected |
Products named in NVD's CPE match criteria (4)
cpe:2.3:o:siemens:simatic_s7-400h_v6_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-400_pn\/dp_v7_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-410_v8_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-410_v10_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 7.5 HIGH — as published by Siemens AG (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1: 7.5 HIGH — as published by NIST (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0: 5 MEDIUM — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:N/I:N/A:P - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: yes · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf
Source dates: published 2022-04-12, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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