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CVE-2026-129100: Cudy TR3000 Security Vulnerability

CVE-2026-129100 explained: high Security Vulnerability in Cudy TR3000. CVSS 8.6. Affected versions, detection, fixes and CTEM priority.

Last updated: Nov 13, 2026

CVSS
8.6 HIGH
EPSS
n/a
CISA KEV
Not listed
CWE
CWE-116

Sources: National Vulnerability Database, CVE.org, CISA KEV, FIRST EPSS

CVE-2026-129100 Overview

Cudy TR3000 before 2.5.42 contains a remote code execution vulnerability that allows authenticated administrators to execute commands as root by uploading crafted OpenVPN private or tls-auth keys. Attackers can close the inline key block with </key>, inject directives such as tls-verify that bypass the .ovpn denylist, and have OpenVPN execute the hook as root.

Critical Impact

Remote, authenticated attackers can exploit this Security Vulnerability in Cudy TR3000. The CVSS base score is 8.6 (High).

Affected Products

  • Cudy TR3000: see the vendor advisory for the exact affected versions

Discovery Timeline

  • 2026-11-13: CVE-2026-129100 published to the National Vulnerability Database by disclosure@vulncheck.com
  • 2026-11-13: last updated in the NVD database

Technical Details for CVE-2026-129100

Vulnerability Analysis

CVE-2026-129100 is a Security Vulnerability weakness (CWE-116) in Cudy TR3000. Based on its CVSS vector, the flaw can be reached over the network, needs some level of access, and needs no user interaction.

With a CVSS base score of 8.6, apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Root Cause

The vendor description states: Cudy TR3000 before 2.5.42 contains a remote code execution vulnerability that allows authenticated administrators to execute commands as root by uploading crafted OpenVPN private or tls-auth keys. Attackers can close the inline key block with </key>, inject directives such as tls-verify that bypass the .ovpn denylist, and have OpenVPN execute the hook as root.

Attack Vector

Based on the CVSS vector, the flaw can be reached over the network, 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:N/AC:L/AT:N/PR:H/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-2026-129100

Detection Strategies

  • Inventory every instance of Cudy TR3000 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 Cudy TR3000 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-2026-129100

Immediate Actions Required

  • Apply the fixed version of Cudy TR3000 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 Cudy TR3000.

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

CVE-2026-129100 is a high severity Security Vulnerability in Cudy TR3000 with a CVSS score of 8.6. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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