---
id: CVE-2026-82555
title: A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506
summary: >-
  A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This
  vulnerability affects the function loginAuth of the file
  /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Such
  manipulation leads to insu…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-310
  - CWE-330
published: '2026-08-30'
updated: '2026-08-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82555'
references:
  - url: >-
      https://github.com/b1uerry/cves/blob/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-token/poc.py
    label: cna@vuldb.com
  - url: >-
      https://github.com/b1uerry/cves/tree/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-token
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-82555'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/891698'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/397071'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/397071/cti'
    label: cna@vuldb.com
  - url: 'https://www.totolink.net/'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-08-31T02:00:57.656Z'
epss: 0.00664
epssPercentile: 0.49623
---

## Overview

A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Such manipulation leads to insufficiently random values. It is possible to launch the attack remotely. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed to the public and may be used.

## Remediation

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