Siemens SIMATIC CN 4100
At a glance
- Source
- NVD
- EPSS
- EPSS 0.30 % · percentile 23 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- siemens
- NVD status
- Analyzed
Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions. This could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.
Weaknesses (CWE)
- CWE-306 — Missing Authentication for Critical Functionality
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | siemens |
| CVSS 4.0 | HIGH 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N | siemens |
| CVSS 4.0 | HIGH 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · productcert@siemens.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | NVD · productcert@siemens.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-29423
- GCVE · GCVE-0-2026-22924
CERT-FR advisories
- CERTFR-2026-AVI-0565 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:siemens:simatic_cn_4100_firmware:*:*:*:*:*:*:*:*< 5.0
Affected products
| Product | Versions |
|---|---|
| Siemens · SIMATIC CN 4100 | affected 0 < V5.0 |
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 |