Sources: National Vulnerability Database, CVE.org, CISA KEV, FIRST EPSS
CVE-2026-18768 Overview
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.
Critical Impact
Affected Products
- Product named in vendor advisory: see the vendor advisory for the exact affected versions
Discovery Timeline
- 2026-11-11: CVE-2026-18768 published to the National Vulnerability Database by info@cert.vde.com
- 2026-11-11: last updated in the NVD database
Technical Details for CVE-2026-18768
Vulnerability Analysis
CVE-2026-18768 is a Security Vulnerability weakness (CWE-782) in Product named in vendor advisory. Based on its CVSS vector, the flaw needs local or adjacent access, needs some level of access, and needs no user interaction.
With a CVSS base score of 8.5, apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Root Cause
The vendor description states: 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.
Attack Vector
Based on the CVSS vector, the flaw needs local or adjacent access, needs some level of access, and needs no user interaction. Attack complexity is low complexity.
No exploitation in the wild is confirmed by CISA at the time of the last update. Check the references below for any vendor or researcher proof of concept.
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Detection Methods for CVE-2026-18768
Detection Strategies
- Inventory every instance of Product named in vendor advisory and compare the running version with the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Run an authenticated vulnerability scan once your scanner ships a check for this CVE.
Monitoring Recommendations
- Forward Product named in vendor advisory application, access and audit logs to your SIEM for retrospective hunting.
- Alert on new processes, configuration changes or outbound connections from the affected service.
- Track the vendor advisory and the CISA KEV catalog for changes in exploitation status.
How to Mitigate CVE-2026-18768
Immediate Actions Required
- Apply the fixed version of Product named in vendor advisory named in the vendor advisory.
- Prioritize internet facing and business critical instances first.
- Rescan after the change to confirm the exposure is closed.
Patch Information
Use the fixed version listed in the vendor advisory for Product named in vendor advisory.
Workarounds
- If patching must wait, restrict network access to the affected service and place it behind authentication or a web application firewall rule.
CWE References
Technical References
This entry is built directly from NVD, CISA KEV and EPSS data. Verify fixed versions in the vendor advisory before you deploy.
Frequently asked questions
Related CVEs
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.
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.
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