CVE-2026-18769
Insufficient IOCTL access control allows local relocation of arbitrary physical memory
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
A local low privileged attacker can move arbitrary physical memory content via TcRouter.sys because of exposed IOCTL function calls resulting in a full compromise of the affected devices.
| CWE | CWE-782 |
| Vendor | beckhoff automation |
| Product | tcrouter.sys for windows on x64 3.1.0.2364 |
| Published | Nov 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Beckhoff Automation / TcRouter.sys for Windows on x64 3.1.0.2364
3.1.0.2364
Beckhoff Automation / TcRouter.sys for Windows on x64 <3.1.0.2365
1.0.0 < 3.1.0.2365
Beckhoff Automation / TcRouter.sys for Windows on x86 3.1.0.2364
3.1.0.2364
Beckhoff Automation / TcRouter.sys for Windows on x86 <3.1.0.2365
1.0.0 < 3.1.0.2365
Beckhoff Automation / TwinCAT.XAR.Base.KM 3.16.29
3.16.29
Beckhoff Automation / TwinCAT.XAR.Base.KM <3.18.1
1.0.0 < 3.18.1
References
Credits
Chi Siang Choo from 4rthur Security Team Julian Horoszkiewicz Patrick Saif