CVE-2026-18767
HIGHCVSS 7.8/10
Last modified
CVE-2026-18767 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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..
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | 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
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-18767?
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.
How severe is CVE-2026-18767?
CVE-2026-18767 has a CVSS score of 7.8/10 (HIGH severity).
How do I fix CVE-2026-18767?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-18767?
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Scan your code nowSource: NVD / NIST