What is CVE-2021-28811?

CVE-2021-28811 is a high-severity vulnerability in Roon Labs Server, classified under OS Command Injection. CVSS score: 7.2/10. Published 2021-06-08.

How severe is CVE-2021-28811?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Roon Labs Server

CVE-2021-28811

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

Vulnerability class: Command Injection (OS Command Injection)

Published 2021-06-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (72.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Roon Labs Server — versions unspecified
Roonlabs Roon Server

Weakness classification (CWE)

References

www.qnap.com/zh-tw/security-advisory/qsa-21-17 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-28811?: CVE-2021-28811 is a high-severity vulnerability in Roon Labs Server, classified under OS Command Injection. CVSS score: 7.2/10. Published 2021-06-08.
How severe is CVE-2021-28811?: High severity. CVSS v3 base score is 7.2 out of 10.