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Medium severity5.7NVD Advisory· Published Jun 3, 2021· Updated Jun 17, 2026

CVE-2021-28806

CVE-2021-28806

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

9
  • QNAP Systems Inc./QTSllm-create2 versions
    <4.5.3.1652 Build 20210428+ 1 more
    • (no CPE)range: <4.5.3.1652 Build 20210428
    • (no CPE)range: unspecified
  • QNAP Systems Inc./QuTScloudllm-create2 versions
    <c4.5.5.1656 Build 20210503+ 1 more
    • (no CPE)range: <c4.5.5.1656 Build 20210503
    • (no CPE)range: unspecified
  • QNAP Systems Inc./QuTS herollm-create2 versions
    <h4.5.2.1638 Build 20210414+ 1 more
    • (no CPE)range: <h4.5.2.1638 Build 20210414
    • (no CPE)range: unspecified
  • Qnap/Qts
    cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
    Range: <4.5.3.1652
  • Qnap/Quts Hero
    cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*
    Range: <h4.5.2.1638
  • Qnap/QuTScloud
    cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:*
    Range: <c4.5.5.1656

Patches

Vulnerability mechanics

References

1

News mentions

0

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