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Vulnerability record · CVE-2023-49621 · published 9 January 2024

CVE-2023-49621: Siemens simatic cn 4100 firmware vulnerability

Siemens · Simatic Cn 4100 Firmware

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

9.8 CVSS 3.1 Critical EPSS 0.60% · top 53.5% CWE-1392 · CWE-1392
9.8CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf PatchVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-49621), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.