The Runtime Toolkit in CODESYS Runtime System 2.3.x and 2.4.x does not require authentication, which allows remote attackers to execute commands via the command-line interface in the TCP listener service or transfer files via requests to the TCP listener service.
Advisories
Source ID Title
EUVD EUVD EUVD-2012-5942 The Runtime Toolkit in CODESYS Runtime System 2.3.x and 2.4.x does not require authentication, which allows remote attackers to execute commands via the command-line interface in the TCP listener service or transfer files via requests to the TCP listener service.
Fixes

Solution

CoDeSys recommends upgrading to the latest version, which is Version 3. It can be downloaded here https://store.codesys.com/engineering/codesys.html .3S released a patch which implements a password for authentication to the device. The patch can be downloaded from the CoDeSys Download Center http://www.codesys.com/download.html . CoDeSys Version 3.X is not affected by these vulnerabilities.


Workaround

3S also recommends the usage of standard security methods like firewalls or virtual private network (VPN) access to prevent unauthorized access to the controller.

History

Wed, 02 Jul 2025 20:15:00 +0000

Type Values Removed Values Added
Description The Runtime Toolkit in CODESYS Runtime System 2.3.x and 2.4.x does not require authentication, which allows remote attackers to (1) execute commands via the command-line interface in the TCP listener service or (2) transfer files via requests to the TCP listener service. The Runtime Toolkit in CODESYS Runtime System 2.3.x and 2.4.x does not require authentication, which allows remote attackers to execute commands via the command-line interface in the TCP listener service or transfer files via requests to the TCP listener service.
Title 3S CoDeSys Improper Access Control
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2025-07-02T20:12:04.890Z

Reserved: 2012-12-05T00:00:00

Link: CVE-2012-6068

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2013-01-21T21:55:01.103

Modified: 2025-07-02T20:15:28.747

Link: CVE-2012-6068

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.