File Storage Control Flaw in SIMATIC CN 4100 by Siemens
CVE-2025-40593

7.1HIGH

Key Information:

Vendor

Siemens
Status
Simatic Cn 4100
Vendor
CVE Published:
8 July 2025

What is CVE-2025-40593?

A vulnerability in the SIMATIC CN 4100 allows unauthorized control over the device by leveraging the ability to store arbitrary files within its SFTP folder. This flaw poses a risk of triggering a denial of service condition, potentially disrupting operations. Users of all versions prior to V4.0 are particularly at risk and are advised to implement protective measures.

Affected Version(s)

SIMATIC CN 4100 0

References

https://cert-portal.siemens.com/productcert/html/ssa-6269...

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-40593 : File Storage Control Flaw in SIMATIC CN 4100 by Siemens