CVE-2018-5440

CRITICAL

3S-Smart CODESYS Web Server <V1.1.9.19 - Buffer Overflow

Title source: llm

Description

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.

References (2)

Core 2

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/102909

Third Party Advisory, US Government Resource x_refsource_misc

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

Scores

CVSS v3 9.8

EPSS 0.0312

EPSS Percentile 86.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-121 CWE-787

Status published

Products (2)

3s-software/codesys_runtime_system < 1.1.9.19

3s-software/codesys_web_server 2.3

Published Feb 15, 2018

Tracked Since Feb 18, 2026