CVE-2025-40593

7.1 highEPSS 0.4%

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 of service condition.

Severity

CVSS 4.0

7.1 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.5 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2025-07-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

siemens:simatic_cn_4100_firmware

References

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

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