Is CVE-2017-16718 actively exploited?

No active exploitation of CVE-2017-16718 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-16718 be exploited remotely?

Yes. CVE-2017-16718 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-16718?

CVE-2017-16718 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2017-16718

CWE-522Published: June 27, 2018· Updated: Jun 17, 2026

5.9

CVSS v3.1

Official Description

Beckhoff TwinCAT 3 supports communication over ADS. ADS is a protocol for industrial automation in protected environments. This protocol uses user configured routes, that can be edited remotely via ADS. This special command supports encrypted authentication with username/password. The encryption uses a fixed key, that could be extracted by an attacker. Precondition of the exploitation of this weakness is network access at the moment a route is added.

NVD Source

Technical Analysis

CVE-2017-16718 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), with a CVSS base score of 5.9.