{"id":"CVE-2019-18858","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-18858","generatedAt":"2026-10-27T22:32:28.116Z","title":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","description":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","published":"2019-11-20T18:15:11.000Z","lastModified":"2026-06-17T02:25:29.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-120"],"affected":["codesys/control for beaglebone","codesys/control for empc-a\\/imx6","codesys/control for iot2000","codesys/control for linux","codesys/control for pfc100","codesys/control for pfc200","codesys/control for plcnext","codesys/control for raspberry pi","codesys/control rte","codesys/control runtime system toolkit","codesys/control win","codesys/embedded target visu toolkit","codesys/hmi","codesys/remote target visu toolkit"],"epss":{"score":0.01945,"percentile":0.80032,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdf","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.tenable.com/security/research/tra-2019-48","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/research/tra-2019-48","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-18858","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}