CVE-2021-38674 json
Reflected XSS Vulnerability in TFTP
published 2022-01-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25113
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
A cross-site scripting (XSS) vulnerability has been reported to affect QTS, QuTS hero and QuTScloud. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QTS, QuTS hero and QuTScloud: QuTS hero h4.5.4.1771 build 20210825 and later QTS 4.5.4.1787 build 20210910 and later QuTScloud c4.5.7.1864 and later
Patch / fix
- QNAP Systems Inc. QuTS hero h4.5.4.1771 build 20210825
- QNAP Systems Inc. QTS 4.5.4.1787 build 20210910
- QNAP Systems Inc. QuTScloud c4.5.7.1864
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- QNAP Systems Inc. QuTS hero
- QNAP Systems Inc. QTS
- QNAP Systems Inc. QuTScloud
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
qnap.com
/en/security-advisory/qsa-21-63
vendor-advisory
Sources
- CVE List CVE-2021-38674
- NVD CVE-2021-38674
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