TI-2018-03954 Aliases CVE-2018-5440 GHSA-8jg4-q5rf-9hjg

Stack-based buffer overflow in 3S-Smart Software Solutions GmbH CODESYS Web Server

MEDIUM 48CWE-121Published 2018-02-15 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

A Stack-based Buffer Overflow issue was discovered in 3S-Smart CODESYS Web Server. Specifically: all Microsoft Windows (also WinCE) based CODESYS web servers running stand-alone Version 2.3, or as part of the CODESYS runtime system running prior to Version V1.1.9.19. A crafted request may cause a buffer overflow and could therefore execute arbitrary code on the web server or lead to a denial-of-service condition due to a crash in the web server.

Why it matters now

EPSS 0.03096 87th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	3S-Smart Software Solutions GmbH CODESYS Web Server	3S-Smart Software Solutions GmbH CODESYS Web Server	—	No fix listed	CNA

3S-Smart Software Solutions GmbH CODESYS Web Server Vendor— Affected 3S-Smart Software Solutions GmbH CODESYS Web Server Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:3s-software:codesys_runtime_system::::::::	before 1.1.9.19	Vulnerable	3s-software
cpe:2.3:a:3s-software:codesys_web_server:2.3:::::::*	2.3	Vulnerable	3s-software

cpe:2.3:a:3s-software:codesys_runtime_system:*:*:*:*:*:*:*:* Versions before 1.1.9.19 Vulnerable ·3s-software
cpe:2.3:a:3s-software:codesys_web_server:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·3s-software

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-5440
2026-10-03 Alias added: GHSA-8jg4-q5rf-9hjg

References

Advisory 1

https://ics-cert.us-cert.gov/advisories/ICSA-18-032-02

TI-2012-05032 3S CoDeSys Improper Access Control CVSS 3.1CRITICAL 9.8
TI-2012-05033 3S CoDeSys Relative Path Traversal CVSS 3.1CRITICAL 10.0
TI-2014-00708 Festo CECX-X-(C1/M1) Controller Improper Authentication CVSS 2.0CRITICAL 9.3
TI-2014-00717 Festo CECX-X-(C1/M1) Controller Improper Authentication CVSS 2.0CRITICAL 9.3
TI-2015-05445 Runtime Toolkit before 2.4.7.48 in 3S-Smart CODESYS before 2.3.9.48 allows remote… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences