---
id: CVE-2026-5679
title: >-
  A security vulnerability has been detected in Totolink A3300R
  17.0.0cu.557_B20221024
summary: >-
  A security vulnerability has been detected in Totolink A3300R
  17.0.0cu.557_B20221024. The impacted element is the function vsetTr069Cfg of
  the file /cgi-bin/cstecgi.cgi. The manipulation of the argument stun_pass
  leads to os command inje…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-77
  - CWE-78
published: '2026-04-06'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-5679'
references:
  - url: >-
      https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injection
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/792650'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/792798'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355506'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355506/cti'
    label: cna@vuldb.com
  - url: 'https://www.totolink.net/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.01918
epssPercentile: 0.79001
ingestedAt: '2026-07-24T09:23:52.310Z'
---

## Overview

A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557_B20221024. The impacted element is the function vsetTr069Cfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument stun_pass leads to os command injection. The exploit has been disclosed publicly and may be used.

## Remediation

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