---
id: "CVE-2026-129103"
page: "https://infrastack.ai/live/CVE-2026-129103"
kind: "vulnerability"
aliases: ["CVE-2026-129103"]
title: "Cudy TR3000 router: admin command injection grants root via reboot_time"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["cudy-tr3000", "infrastructure", "openwrt-based", "routers", "self-hosted"]
not_affected_if: ["firmware-2.5.42-or-later", "no-admin-access-by-untrusted-users"]
published_at: "2026-11-13T16:19:00+00:00"
first_seen_at: "2026-11-13T16:47:34+00:00"
updated_at: "2026-11-13T16:48:23+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-129103", "first_seen_at": "2026-11-13T16:47:34+00:00"}]
exploit_sources: []
---

# Cudy TR3000 router: admin command injection grants root via reboot_time

Link for people: https://infrastack.ai/live/CVE-2026-129103 (this .md is for agents)

Cudy TR3000 routers before firmware 2.5.42 let an authenticated administrator inject newlines into the reboot_time setting. The injected text is written to the root crontab, so commands run as root.

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

## How to check

- Check the router's firmware version in the admin web interface (System or status page) and compare it with `2.5.42`.
- Confirm whether the admin interface is reachable from the internet or only from the local network.

## Fix

- Cudy TR3000: firmware `2.5.42` or later, per the advisory.

## Timeline

- 2026-11-13T16:47:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-129103

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time

## From the sources

Cudy TR3000 before 2.5.42 contains a command injection vulnerability that allows authenticated administrators to execute commands as root by injecting newlines into reboot_time. Attackers can submit a reboot_time value followed by a newline and crontab line, which /etc/init.d/autoreboot writes to the root crontab for crond to run.

---

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