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TI-2017-12287 Aliases CVE-2017-16718GHSA-wx26-fm45-hvxc

Insufficiently protected credentials in ICS-CERT Beckhoff TwinCAT

Priority LOW 27CWE-522Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-522.

Summary

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.

Why it matters now

EPSS 0.00423 36th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ICS-CERTBeckhoff TwinCATVersion 3—No fix listedCNA
  • Beckhoff TwinCAT VendorICS-CERT Affected Version 3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:beckhoff:twincat:3.0:*:*:*:*:*:*:*3.0VulnerableBeckhoff
  • cpe:2.3:a:beckhoff:twincat:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Beckhoff

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-16718
  2. 2026-10-03 Alias added: GHSA-wx26-fm45-hvxc

References

Advisory 1

  • TI-2011-03066 Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of… CVSS 2.0MEDIUM 5.0
  • TI-2019-12580 Beckhoff Embedded Windows PLCs through 3.1.4024.0, and Beckhoff Twincat on Windows… CVSS 3.1CRITICAL 9.8
  • TI-2014-04414 Beckhoff Embedded PC Images and TwinCAT Components Improper Restriction of Excessive Authentication Attempts CVSS 3.1CRITICAL 9.1
  • TI-2014-04415 Beckhoff Embedded PC Images and TwinCAT Components Exposed Dangerous Method or Function CVSS 3.1CRITICAL 9.1
  • TI-2017-12294 Improper authorization in ICS-CERT Beckhoff TwinCAT CVSS 3.0CRITICAL 9.1
  • TI-2019-04001 Beckhoff TwinCAT Profinet Driver Divide-by-Zero Denial of Service CVSS 3.1HIGH 7.5
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences