Critical severity9.8NVD Advisory· Published Feb 15, 2018· Updated Jun 17, 2026
CVE-2018-5440
CVE-2018-5440
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.
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Affected products
2- Range: = 2.3
- Range: < V1.1.9.19
Patches
Vulnerability mechanics
References
2- www.securityfocus.com/bid/102909nvdThird Party AdvisoryVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-18-032-02nvdThird Party AdvisoryUS Government Resource
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