Is CVE-2017-16726 actively exploited?

No active exploitation of CVE-2017-16726 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-16726 be exploited remotely?

Yes. CVE-2017-16726 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-16726?

CVE-2017-16726 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2017-16726

CRITICAL

CVE-2017-16726

CWE-285Published: June 27, 2018· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2017-16726 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.