{"cve":"CVE-2019-16871","nvd":{"published":"2019-12-19T21:15:13.573","modified":"2026-06-17T02:22:52.230","status":"Modified","description":"Beckhoff Embedded Windows PLCs through 3.1.4024.0, and Beckhoff Twincat on Windows Engineering stations, allow an attacker to achieve Remote Code Execution (as SYSTEM) via the Beckhoff ADS protocol.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-290"],"references":["https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2017-001.pdf","https://www.ic4.be/2019/12/18/beckhoff-cve-2019-16871/#more-648","https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2017-001.pdf","https://www.ic4.be/2019/12/18/beckhoff-cve-2019-16871/#more-648"],"products":["beckhoff:twincat"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-16871","score":0.05302,"percentile":0.92587,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}