Home/CVE/A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QTS, QuTS hero and QuTScloud.
CVE

CVE-2021-44053

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QTS, QuTS hero and QuTScloud.

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running 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: QTS 4.5.4.1991 build 20220329 and later QTS 5.0.0.1986 build 20220324 and later QuTS hero h5.0.0.1986 build 20220324 and later QuTS hero h4.5.4.1971 build 20220310 and later QuTScloud c5.0.1.1949 and later.

MEDIUM · CVSS 5.7 EPSS 0.00422
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

9
qnap qts>= 5.0.0.1716 and < 5.0.0.1986
qnap qts>= 4.3.3.0174 and < 4.3.3.1945
qnap qts>= 4.3.4.0899 and < 4.3.4.1976
qnap qts>= 4.3.6.0895 and < 4.3.6.1965
qnap qts>= 4.4.0.0883 and < 4.5.4.1991
qnap qtsall versions
qnap quts hero< h4.5.4.1771
qnap quts hero>= h5.0.0.1772 and < h5.0.0.1986
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Scoring & Timeline

5.7
MEDIUM · CVSS v3.1 · security@qnapsecurity.com.tw
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 May 2022 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.qnap.com/en/security-advisory/qsa-22-16Vendor Advisory
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