CVE-2021-28806
QNAP · published 2021-06-03
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by QNAP Systems, Inc. via the CVE Program.
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.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| QNAP Systems Inc. | QTS | unspecified – before 4.5.3.1652 Build 20210428: affected 4.3.6: unaffected 4.3.3: unaffected |
| QNAP Systems Inc. | QuTS hero | unspecified – before h4.5.2.1638 Build 20210414: affected |
| QNAP Systems Inc. | QuTScloud | unspecified – before c4.5.5.1656 Build 20210503: affected |
Products named in NVD's CPE match criteria (3)
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 5.7 MEDIUM — as published by QNAP Systems, Inc. (Secondary)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N - CVSS 3.1: 5.4 MEDIUM — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0: 3.5 LOW — as published by NIST (Primary)
AV:N/AC:M/Au:S/C:N/I:P/A:N
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://www.qnap.com/zh-tw/security-advisory/qsa-21-22
- https://www.qnap.com/zh-tw/security-advisory/qsa-21-22
Source dates: published 2021-06-03, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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