CVE-2021-28806

DOM-Based XSS Vulnerability in QTS and QuTS hero

Description

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.

Remediation

Solution:

  • 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

Category

5.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.25%
Vendor Advisory qnap.com
Affected: QNAP Systems Inc. QTS
Affected: QNAP Systems Inc. QuTS hero
Affected: QNAP Systems Inc. QuTScloud
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2021-28806?
CVE-2021-28806 has been scored as a medium severity vulnerability.
How to fix CVE-2021-28806?
To fix CVE-2021-28806: 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
Is CVE-2021-28806 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-28806 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-28806?
CVE-2021-28806 affects QNAP Systems Inc. QTS, QNAP Systems Inc. QuTS hero, QNAP Systems Inc. QuTScloud.
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