CVE-2021-28811

Name: CVE-2021-28811
Creator: NVD / NIST
Published: 2021-06-08T03:15:07.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.45%

Last modified Jun 17, 2026

CVE-2021-28811 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. Roon Labs has already fixed this vulnerability in the following versions: Roon Server 2021-05-18 and later. EPSS estimates a 1.45% chance of exploitation in the next 30 days.

Description

If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. Roon Labs has already fixed this vulnerability in the following versions: Roon Server 2021-05-18 and later

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.45%

70.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Roonlabs	Roon Server	< 2021-05-18

References

https://www.qnap.com/zh-tw/security-advisory/qsa-21-17Vendor Advisory
https://www.qnap.com/zh-tw/security-advisory/qsa-21-17Vendor Advisory

Timeline

Published: Jun 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28811?

How severe is CVE-2021-28811?

CVE-2021-28811 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28811?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28811?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST