CVE-2019-16871

CRITICAL 9.8CVE-2019-16871 · Published 19/12/2019 · updated 17/06/2026

In short

CVE-2019-16871 is a CRITICAL (CVSS 9.8) vulnerability affecting twincat (beckhoff).
Chance of exploitation in the next 30 days (EPSS): 5.3%, higher than 92.6% of all vulnerabilities.
Fix: update to 3.1 or later.

Package	Affected versions	Patched versions
twincat beckhoff	`= 2.0= 3.1≥ 3.0, < 3.1`	`3.1`

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.

References

download.beckhoff.com/download/document/product-security/Advisories/advisory-2017-001.pdf · Vendor Advisory
ic4.be/2019/12/18/beckhoff-cve-2019-16871 · Exploit

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Package

Affected versions

Patched versions

twincat

beckhoff

= 2.0= 3.1≥ 3.0, < 3.1

3.1

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