CVE-2026-18767 | BDVDB-2026-404726 Detail

Beckhoff AutomationTcRouter.sys for Windows on x64 3.1.0.2364

Description#

A local low privileged attacker or process can access I/O ports via TcRouter.sys because of exposed IOCTL function calls resulting in a full compromise of the affected devices.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-782 Exposed IOCTL with Insufficient Access Control

References#

https://www.certvde.com/en/advisories/VDE-2026-087/

Exploit#

No public exploit known

History#

Version 12026-11-11Record published in the CVE List.

Published

Published: 2026-11-11
Last modified: 2026-11-11

Vendor information

Vendor: Beckhoff Automation
Product: TcRouter.sys for Windows on x64 3.1.0.2364

All Beckhoff Automation vulnerabilities

Score

7.8 High

EPSS

Not available

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
3.1.0.2364
Fixed
Not stated

Scoring System

CVSS v4.0

8.5 High

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Attack Requirements	None
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).