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CVE-2021-28798

Estado: ModificadaAlta (7.5)—

A relative path traversal vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to modify files that impact system integrity. QNAP have already fixed this vulnerability in the following versions: QTS 4.5.2.1630 Build 20210406 and later QTS 4.3.6.1663 Build 20210504 and later QTS 4.3.3.1624 Build 20210416 and later QuTS hero h4.5.2.1638 Build 20210414 and later QNAP NAS running QTS 4.5.3 are not affected.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Qnap — QTSQnap — Quts Hero

CWE

Referencias

JSON original (NVD)

Mostrar
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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          "confidentialityImpact": "NONE"
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        "impactScore": 2.9,
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          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
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          "product": "QTS",
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  "published": "2021-05-21T03:15:09.997",
  "references": [
    {
      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-21-14",
      "tags": [
        "Vendor Advisory"
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      "source": "security@qnapsecurity.com.tw"
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      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-21-14",
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-23"
        },
        {
          "lang": "en",
          "value": "CWE-284"
        }
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    },
    {
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-22"
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  "descriptions": [
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      "lang": "en",
      "value": "A relative path traversal vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to modify files that impact system integrity. QNAP have already fixed this vulnerability in the following versions: QTS 4.5.2.1630 Build 20210406 and later QTS 4.3.6.1663 Build 20210504 and later QTS 4.3.3.1624 Build 20210416 and later QuTS hero h4.5.2.1638 Build 20210414 and later QNAP NAS running QTS 4.5.3 are not affected."
    },
    {
      "lang": "es",
      "value": "Se ha reportado una vulnerabilidad de salto de ruta relativa que afecta al NAS de QNAP que ejecuta QTS y QuTS hero. Si es explotada, esta vulnerabilidad permite a atacantes modificar archivos que afectan la integridad del sistema. QNAP ya ha corregido esta vulnerabilidad en las siguientes versiones: QTS versión 4.5.2.1630 Build 20210406 ??y posterior QTS versión  4.3.6.1663 Build 20210504 y posterior QTS versión 4.3.3.1624 Build 20210416 y posterior QuTS hero versión h4.5.2.1638 Build 20210414 y posterior. QNAP NAS ejecutando QTS versión 4.5.3 no están afectados"
    }
  ],
  "lastModified": "2026-06-17T03:46:52.867",
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