---
id: CVE-2020-21883
title: >-
  Unibox U-50 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4
  contain a OS command injection vulnerability in /tools/ping, which can leads
  to complete device takeover.
summary: >-
  Unibox U-50 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4
  contain a OS command injection vulnerability in /tools/ping, which can leads
  to complete device takeover.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: indionetworks
product: unibox_u50_firmware
affected:
  - unibox_u50_firmware = 2.4
  - unibox_u500_firmware = 2.4
  - unibox_u1000_firmware = 2.4
  - unibox_u2500_firmware = 2.4
  - unibox_u5000_firmware = 2.4
published: '2021-04-09'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-21883'
references:
  - url: 'https://s3curityb3ast.github.io/KSA-Dev-009.txt'
    label: cve@mitre.org
  - url: 'https://www.mail-archive.com/fulldisclosure@seclists.org/msg07140.html'
    label: cve@mitre.org
  - url: 'http://wifi-soft.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://s3curityb3ast.github.io/KSA-Dev-009.txt'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mail-archive.com/fulldisclosure%40seclists.org/msg07140.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.0409
epssPercentile: 0.90339
ingestedAt: '2026-07-05T02:00:01.579Z'
---

## Overview

Unibox U-50 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4 contain a OS command injection vulnerability in /tools/ping, which can leads to complete device takeover.

## Affected

- `unibox_u50_firmware = 2.4`
- `unibox_u500_firmware = 2.4`
- `unibox_u1000_firmware = 2.4`
- `unibox_u2500_firmware = 2.4`
- `unibox_u5000_firmware = 2.4`

## Remediation

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