High severity7.5NVD Advisory· Published Nov 21, 2019· Updated Jun 17, 2026

CVE-2019-5637

Description

When Beckhoff TwinCAT is configured to use the Profinet driver, a denial of service of the controller could be reached by sending a malformed UDP packet to the device. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

Affected products

Beckhoff/Twincat5 versions
cpe:2.3:o:beckhoff:twincat:3.1.4022.29:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:beckhoff:twincat:3.1.4022.29:*:*:*:*:*:*:*
- cpe:2.3:o:beckhoff:twincat:3.1.4022.30:*:*:*:*:*:*:*
- (no CPE)range: <=2.304, <=3.1.4204.0
- (no CPE)range: 2304
- (no CPE)range: 4204.0

Patches

Vulnerability mechanics

References

blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/nvdExploitThird Party Advisory
download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-007.pdfnvdMitigationVendor Advisory

News mentions

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