3S CODESYS Runtime 3.x < Insufficient Access Control Vulnerability

critical Nessus Plugin ID 120947


A programmable logic controller (PLC) runtime on the remote host is affected by authentication bypass and unencrypted communications vulnerabilities.


The 3S CODESYS Runtime environment running on the remote host is affected by authentication bypass and unencrypted communications vulnerabilities due missing security controls. An unauthenticated, remote attacker can exploit this vulnerability to take control of the affected host.

Note: Nessus checked the version to determine if user authentication and encryption could be enabled. It did not verify the user authentication and encryption security controls were enabled.


Upgrade 3S CODESYS Runtime to version or higher. If upgrading to, enable user authentication and encryption. If upgrading to and later, no additional action is required.

See Also



Plugin Details

Severity: Critical

ID: 120947

File Name: scada_codesys_runtime_3_4_14_0.nbin

Version: 1.63

Type: remote

Family: SCADA

Published: 1/3/2019

Updated: 7/17/2023

Configuration: Enable thorough checks

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2018-10612


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:3s-software:codesys_runtime_system

Required KB Items: SCADA/CoDeSys

Exploit Ease: No known exploits are available

Patch Publication Date: 12/19/2018

Vulnerability Publication Date: 12/19/2018

Reference Information

CVE: CVE-2018-10612, CVE-2018-20025, CVE-2018-20026

ICSA: 18-352-03