CVE-2020-2509

CVE-2020-2509: Command Injection Vulnerability in QTS and QuTS hero

Vendor Qnap Systems Inc.
Product QTS
Weakness CWE-77
KEV Status Known Exploited
Published April 17, 2021
Last update October 21, 2025

CVSS base score

What the vulnerability does

01Description

A command injection vulnerability has been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 Build 20210202 and later QTS 4.5.1.1495 Build 20201123 and later QTS 4.3.6.1620 Build 20210322 and later QTS 4.3.4.1632 Build 20210324 and later QTS 4.3.3.1624 Build 20210416 and later QTS 4.2.6 Build 20210327 and later QuTS hero h4.5.1.1491 build 20201119 and later

CISA mandated remediation

02CISA Required Action

Apply updates per vendor instructions.

Key dates

03Disclosure timeline

April 17, 2021 CVE published
October 21, 2025 Record updated