{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-21T18:24:28.659","vulnerabilities":[{"cve":{"id":"CVE-2018-5440","sourceIdentifier":"ics-cert@hq.dhs.gov","published":"2018-02-15T10:29:00.680","lastModified":"2026-06-17T02:00:19.447","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Se ha descubierto un problema de desbordamiento de búfer basado en pila en 3S-Smart CODESYS Web Server. Específicamente: todos los servidores web CODESYS basados en Microsoft Windows (también WinCE) que ejecutan la versión independiente 2.3 o que formen parte del sistema runtime CODESYS que ejecuta versiones anteriores a la V1.1.9.19. Una petición manipulada podría provocar un desbordamiento de búfer y, por lo tanto, ejecutar código arbitrario en el servidor web o desembocar en una condición de denegación de servicio (DoS) debido a un cierre inesperado en el servidor web."}],"affected":[{"source":"ics-cert@hq.dhs.gov","affectedData":[{"vendor":"n/a","product":"3S-Smart Software Solutions GmbH CODESYS Web Server","versions":[{"version":"3S-Smart Software Solutions GmbH CODESYS Web Server","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"ics-cert@hq.dhs.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-121"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:3s-software:codesys_runtime_system:*:*:*:*:*:*:*:*","versionEndExcluding":"1.1.9.19","matchCriteriaId":"B75FDB8D-51F3-43D4-B2ED-990F0ED9CC17"},{"vulnerable":true,"criteria":"cpe:2.3:a:3s-software:codesys_web_server:2.3:*:*:*:*:*:*:*","matchCriteriaId":"0F918177-556A-494A-A524-D4FEEF8CBE20"}]}]}],"references":[{"url":"http://www.securityfocus.com/bid/102909","source":"ics-cert@hq.dhs.gov","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-032-02","source":"ics-cert@hq.dhs.gov","tags":["Third Party Advisory","US Government Resource"]},{"url":"http://www.securityfocus.com/bid/102909","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-032-02","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","US Government Resource"]}]}}]}