Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2019-5636 Details

Description

When a Beckhoff TwinCAT Runtime receives a malformed UDP packet, the ADS Discovery Service shuts down. Note that the TwinCAT devices are still performing as normal. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

Metrics

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/ CVEExploitThird Party Advisory
https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-004.pdf CVEVendor Advisory
https://blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/ [email protected]ExploitThird Party Advisory
https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-004.pdf [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-404Improper Resource Shutdown or Release[email protected]
CWE-404Improper Resource Shutdown or Release[email protected]

Affected Products

ProductVersions
beckhoff twincat
2.0 build2304
3.1 build4024.0

CPE

  • cpe:2.3:a:beckhoff:twincat:2.0:build2304:*:*:*:*:*:*
  • cpe:2.3:a:beckhoff:twincat:3.1:build4024.0:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2019-5636
NVD Published Date:
Nov 21, 2019
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2019-5636 Details - Not Deferred