{"id":"CVE-2019-18858","aliases":["EUVD-2019-8554","GHSA-v33j-h2wh-c582"],"status":"published","title":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a...","description":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02331,"percentile":0.83662,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2019-11-20T17:04:25Z","modified":"2026-06-17T02:25:29Z","products":[{"vendor":"codesys","product":"control_for_beaglebone"},{"vendor":"codesys","product":"control_for_empc-a\\/imx6"},{"vendor":"codesys","product":"control_for_iot2000"},{"vendor":"codesys","product":"control_for_linux"},{"vendor":"codesys","product":"control_for_pfc100"},{"vendor":"codesys","product":"control_for_pfc200"},{"vendor":"codesys","product":"control_for_plcnext"},{"vendor":"codesys","product":"control_for_raspberry_pi"},{"vendor":"codesys","product":"control_rte"},{"vendor":"codesys","product":"control_runtime_system_toolkit"},{"vendor":"codesys","product":"control_win"},{"vendor":"codesys","product":"embedded_target_visu_toolkit"},{"vendor":"codesys","product":"hmi"},{"vendor":"codesys","product":"remote_target_visu_toolkit"}],"references":[{"url":"https://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.tenable.com/security/research/tra-2019-48","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18858"},{"url":"https://github.com/advisories/GHSA-v33j-h2wh-c582"}],"sources":{"cve":[{"id":"CVE-2019-18858","description":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","status":"published","published":"2019-11-20T17:04:25Z","modified":"2024-08-05T02:02:39.804Z","updated_at":"2026-11-02T14:32:23.485011Z"}],"euvd":[{"id":"EUVD-2019-8554","description":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","status":"published","published":"2019-11-20T17:04:25Z","modified":"2024-08-05T02:02:39Z","updated_at":"2026-11-03T02:40:27.303586Z"}],"ghsa":[{"id":"GHSA-v33j-h2wh-c582","title":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a...","description":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","status":"published","published":"2022-05-24T17:01:37Z","modified":"2024-04-04T02:40:12Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:56:10.534826Z"}],"nvd":[{"id":"CVE-2019-18858","description":"CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.","status":"published","published":"2019-11-20T18:15:10.917Z","modified":"2026-06-17T02:25:29.023Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:05:37.024431Z"}]}}