CVE-2023-29131
criticalA vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5).
Vendor / product: Siemens — simatic cn 4100 firmware
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5). Affected device consists of an incorrect default value in the SSH configuration. This could allow an attacker to bypass network isolation.
CVSS
10.0
10.0 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-07-11 10:15
Modified: 2026-10-24 13:10
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
siemens / simatic_cn_4100_firmware <2.5
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf
Vendor advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf
Patch / mitigation: https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf
Patch / mitigation: https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf productcert@siemens.com
- https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗