CVE-2019-5636 MEDIUM

CVE-2019-5636: Beckhoff TwinCAT Discovery Service Denial of Service

Vendor Beckhoff
Product TwinCAT 2
Weakness CWE-404
Published November 21, 2019
Last update September 17, 2024
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

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).

Key dates

02Disclosure timeline

November 21, 2019 CVE published
September 17, 2024 Record updated