What is the vulnerability ID?

The vulnerability ID is CVE-2021-28806.

What is the severity rating of CVE-2021-28806?

The severity rating of CVE-2021-28806 is medium, with a score of 5.4.

How does CVE-2021-28806 affect QNAP NAS?

CVE-2021-28806 affects QNAP NAS running QTS and QuTS hero versions prior to specified builds.

What is the impact of CVE-2021-28806?

CVE-2021-28806 allows attackers to inject malicious code, compromising the security of the affected QNAP NAS devices.

How can I fix CVE-2021-28806?

To fix CVE-2021-28806, users should update their QNAP NAS to QTS version 4.5.3.1652 Build 20210428 or later, or update QuTS hero to version h4.5.2.1638 or later.

Vulnerability/
CVE-2021-28806

medium

5.7

CWE

3/6/2021

3/8/2024

CVE-2021-28806: DOM-Based XSS Vulnerability in QTS and QuTS hero

First published: Thu Jun 03 2021(Updated: )

A DOM-based XSS vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to inject malicious code. This issue affects: QNAP Systems Inc. QTS versions prior to 4.5.3.1652 Build 20210428. QNAP Systems Inc. QuTS hero versions prior to h4.5.2.1638 Build 20210414. QNAP Systems Inc. QuTScloud versions prior to c4.5.5.1656 Build 20210503. This issue does not affect: QNAP Systems Inc. QTS 4.3.6; 4.3.3.

Credit: security@qnapsecurity.com.tw

Affected Software	Affected Version	How to fix
QNAP QTS	<4.5.3.1652
QNAP QuTS hero	<h4.5.2.1638
QNAP QuTScloud	<c4.5.5.1656

Remedy

QNAP have already fixed this vulnerability in the following versions: QTS 4.5.3.1652 Build 20210428 and later QuTS hero h4.5.2.1638 Build 20210414 and later QuTScloud c4.5.5.1656 Build 20210503 and later

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Reference Links

https://www.qnap.com/zh-tw/security-advisory/qsa-21-22

Frequently Asked Questions

What is the vulnerability ID?
The vulnerability ID is CVE-2021-28806.
What is the severity rating of CVE-2021-28806?
The severity rating of CVE-2021-28806 is medium, with a score of 5.4.
How does CVE-2021-28806 affect QNAP NAS?
CVE-2021-28806 affects QNAP NAS running QTS and QuTS hero versions prior to specified builds.
What is the impact of CVE-2021-28806?
CVE-2021-28806 allows attackers to inject malicious code, compromising the security of the affected QNAP NAS devices.
How can I fix CVE-2021-28806?
To fix CVE-2021-28806, users should update their QNAP NAS to QTS version 4.5.3.1652 Build 20210428 or later, or update QuTS hero to version h4.5.2.1638 or later.

agent/type
collector/nvd-index
agent/software-canonical-lookup-request
agent/weakness
agent/references
agent/author
agent/softwarecombine
agent/description
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/title
agent/severity
agent/remedy
agent/tags
agent/first-publish-date
agent/event
vendor/qnap
canonical/qnap qts
canonical/qnap quts hero
canonical/qnap qutscloud

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