---
id: "CVE-2026-75578"
page: "https://infrastack.ai/live/CVE-2026-75578"
kind: "vulnerability"
aliases: ["CVE-2026-75578"]
title: "Cudy TR3000 router: authenticated admin can run commands as root"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["cudy-tr3000", "home-router", "infrastructure", "luci", "openvpn"]
not_affected_if: ["admin-access-restricted", "firmware-2.5.42-or-later", "no-openvpn-client-configured"]
published_at: "2026-11-13T10:18:17+00:00"
first_seen_at: "2026-11-13T10:47:36+00:00"
updated_at: "2026-11-13T10:50:36+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75578", "first_seen_at": "2026-11-13T10:47:36+00:00"}]
exploit_sources: []
---

# Cudy TR3000 router: authenticated admin can run commands as root

Link for people: https://infrastack.ai/live/CVE-2026-75578 (this .md is for agents)

Cudy TR3000 firmware before 2.5.42 mishandles the remote host field of an uploaded OpenVPN configuration, so shell quoting breaks and injected text runs as a command. An attacker with administrator login can execute arbitrary commands as root on the router.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the firmware version on the router's admin page; versions below `2.5.42` are in the affected range.
- Confirm whether the router's OpenVPN client configuration upload feature is in use.

## Fix

- Cudy TR3000: move to firmware `2.5.42` or later.

## Timeline

- 2026-11-13T10:47:36+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-75578

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-openvpn-client-configuration-upload

## From the sources

Cudy TR3000 before 2.5.42 contains a command injection vulnerability in luci/model/cbi/vpn/openvpn/client.lua, which embeds the shellquote()-quoted remote host token of an uploaded OpenVPN configuration inside an already single-quoted sed program run by os.execute(), so the nested quotes terminate the outer quote. Authenticated administrators can upload an .ovpn file whose remote host token contains a semicolon to execute arbitrary commands as root.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_