---
id: CVE-2025-13184
title: >-
  Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to
  unauthenticated root login with a blank password on factory/reset X5000R
  V9.1.0u.6369_B20230113 (arbitrary command execution)
summary: >-
  Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to
  unauthenticated root login with a blank password on factory/reset X5000R
  V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that
  share the sam…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-863
vendor: totolink
product: x5000r_firmware
affected:
  - x5000r_firmware = 9.1.0u.6369_b20230113
published: '2025-12-10'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:10:00.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13184'
references:
  - url: >-
      https://hackingbydoing.wixsite.com/hackingbydoing/post/totolink-x5000r-ax1800-router-authentication-bypass
    label: cret@cert.org
  - url: 'https://www.kb.cert.org/vuls/id/821724'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.11278
epssPercentile: 0.95825
ingestedAt: '2026-09-25T23:21:16.915Z'
---

## Overview

Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may also be affected.

## Affected

- `x5000r_firmware = 9.1.0u.6369_b20230113`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.