Siemens AG SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below, SIMATIC S7-400 (incl. F) CPU hardware version 5.0, SIMATIC S7-400H CPU hardware version 4.5 and below
At a glance
- Source
- NVD
- EPSS
- EPSS 2.38 % · percentile 84 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- siemens
- NVD status
- Modified
Description
A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2), SIMATIC S7-400H CPU hardware version 4.5 and below (All versions). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-16636
- GCVE · GCVE-0-2018-4850
CERT-FR advisories
- CERTFR-2020-AVI-077 — Multiples vulnérabilités dans les produits Siemens de variante SIPLUS · cert.ssi.gouv.fr
- CERTFR-2018-AVI-235 — Vulnérabilité dans SCADA Siemens SIMATIC · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:siemens:simatic_s7-400_firmware:*:*:*:*:*:*:*:*≤ 4.0cpe:2.3:o:siemens:simatic_s7-400_firmware:*:*:*:*:*:*:*:*< 5.2cpe:2.3:o:siemens:simatic_s7-400h_firmware:*:*:*:*:*:*:*:*≤ 4.5
Affected products
| Product | Versions |
|---|---|
| Siemens AG · SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below, SIMATIC S7-400 (incl. F) CPU hardware version 5.0, SIMATIC S7-400H CPU hardware version 4.5 and below | affected SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below : All versions ; affected SIMATIC S7-400 (incl. F) CPU hardware version 5.0 : All firmware versions < V5.2 ; affected SIMATIC S7-400H CPU hardware version 4.5 and below : All versions |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |