What is CVE-2025-40593?

CVE-2025-40593 is a medium-severity vulnerability in Siemens Simatic Cn 4100, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2025-07-08.

How severe is CVE-2025-40593?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Siemens Simatic Cn 4100

CVE-2025-40593

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0). The affected application allows to control the device by storing arbitrary files in the SFTP folder of the device. This could allow an attacker to cause a denial…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (54.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Siemens Simatic Cn 4100 — versions 0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

cert-portal.siemens.com/productcert/html/ssa-626991.html

Frequently asked questions

What is CVE-2025-40593?: CVE-2025-40593 is a medium-severity vulnerability in Siemens Simatic Cn 4100, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2025-07-08.
How severe is CVE-2025-40593?: Medium severity. CVSS v3 base score is 6.5 out of 10.