---
id: "CVE-2026-75489"
page: "https://infrastack.ai/live/CVE-2026-75489"
kind: "vulnerability"
aliases: ["CVE-2026-75489"]
title: "Cudy TR3000 router: forged mesh messages push devices onto attacker Wi-Fi"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Cudy TR3000", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["cudy-tr3000", "infrastructure", "self-hosted", "smart-mesh", "wifi-router"]
not_affected_if: ["firmware-2.5.42-or-later", "smart-mesh-disabled"]
published_at: "2026-11-13T10:18:16+00:00"
first_seen_at: "2026-11-13T10:47:35+00:00"
updated_at: "2026-11-13T10:54:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75489", "first_seen_at": "2026-11-13T10:47:35+00:00"}]
exploit_sources: []
---

# Cudy TR3000 router: forged mesh messages push devices onto attacker Wi-Fi

Link for people: https://infrastack.ai/live/CVE-2026-75489 (this .md is for agents)

Cudy TR3000 routers before 2.5.42 protect their Smart Mesh onboarding messages only with an AES key derived from public values and a CRC32 check. An adjacent attacker can forge these messages and force unpaired devices to join an attacker-controlled access point using an attacker-chosen SSID and pre-shared key.

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

## Affected

- vendor:Cudy TR3000 affected range not listed fixed no fixed version listed

## How to check

- Check the router firmware version in the Cudy web admin under system status; it is vulnerable if below `2.5.42`
- Check whether Smart Mesh (SMT) onboarding is enabled on the device

## Fix

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

## Timeline

- 2026-11-13T10:47:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-75489

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-smt-message-forgery-via-probe-request-vendor-ie

## From the sources

Cudy TR3000 before 2.5.42 contains an insufficient verification of data authenticity vulnerability in the mt_wifi Smart Mesh Technology (SMT) onboarding, which protects messages only with an AES-CBC key derived from public values and a CRC32 check. Adjacent unauthenticated attackers can forge SMT messages in Probe Request vendor IEs carrying an attacker-chosen SSID and pre-shared key, forcing unpaired devices to join attacker-controlled access points.

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