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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Siemens
  • Simatic Cn 4100

Configuration 1 [-]

cpe:2.3:a:siemens:simatic_cn_4100:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://cert-portal.siemens.com/productcert/html/ssa-626991.html cve-icon cve-icon
History

Thu, 21 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:siemens:simatic_cn_4100:*:*:*:*:*:*:*:*

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00044}

 epss

{'score': 0.00049}

Tue, 08 Jul 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 08 Jul 2025 10:45:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published: 2025-07-08T10:34:51.157Z

Updated: 2025-07-08T16:11:43.633Z

Reserved: 2025-04-16T08:20:17.034Z

Link: CVE-2025-40593

cve-icon Vulnrichment

Updated: 2025-07-08T14:25:59.774Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-08T11:15:29.473

Modified: 2025-08-21T15:12:53.040

Link: CVE-2025-40593

cve-icon Redhat

No data.