CVE-2017-16726: Beckhoff Twincat

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Beckhoff TwinCAT supports communication over ADS. ADS is a protocol for industrial automation in protected environments. ADS has not been designed to achieve security purposes and therefore does not include any encryption algorithms because of their negative effect on performance and throughput. An attacker can forge arbitrary ADS packets when legitimate ADS traffic is observable.

Affected products

• Beckhoff Twincat: affected versions not specified

Published 2018-06-27. Last modified 2026-06-17.