CVE-2019-5636mediumCWE-404

CVE-2019-5636: medium-severity vulnerability in Beckhoff TwinCAT 2

Beckhoff TwinCAT Discovery Service Denial of Service

Published · Updated

Follow this CVE+ Monitor TwinCAT

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 1.4%
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).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
Beckhoff · TwinCAT 2Beckhoff · TwinCAT 3.1
Related CVEs — Beckhoff TwinCAT 2

In the same product, most dangerous first.

CVE-2019-5637HIGHBeckhoff TwinCAT Profinet Driver Divide-by-Zero Denial of ServiceEPSS 1.4%