CVE-2026-18768
Received Received - Intake

Arbitrary Memory Access in TcRouter via IOCTL

Publication date: 2026-11-11

Last updated on: 2026-11-11

Assigner: CERT VDE

Description
A local low privileged attacker can access arbitrary physical memory or define its mapping via TcRouter.sys because of exposed IOCTL function calls resulting in a full compromise of the affected devices.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-11
Last Modified
2026-11-11
Generated
2026-11-11
AI Q&A
2026-11-11
EPSS Evaluated
N/A
NVD
CVE-2026-18768
EUVD
EUVD-2026-123319

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-782 The product implements an IOCTL with functionality that should be restricted, but it does not properly enforce access control for the IOCTL.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability allows a local attacker with low privileges to access arbitrary physical memory or modify memory mappings through exposed IOCTL function calls in the TcRouter.sys driver. This can lead to a complete compromise of the affected devices.

Impact Analysis

An attacker could exploit this to gain full control over the system, access sensitive data, or execute arbitrary code. This is particularly dangerous for systems running Beckhoff Automation software on Windows.

Mitigation Strategies

Update TcRouter.sys to version 3.1.0.2365 or later for Windows x86/x64 systems to address the exposed IOCTL function calls. Remove or restrict access to vulnerable versions of TwinCAT.XAR.Base.KM below 3.18.1.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-18768. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...