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CVE-2021-28800

Estado: ModificadaCrítica (9.8)—

Se ha reportado una vulnerabilidad de inyección de comandos que afecta a QNAP NAS ejecutando versiones heredadas de QTS. Si es explotado, esta vulnerabilidad permite a atacantes ejecutar comandos arbitrarios en una aplicación comprometida. Este problema afecta: QNAP Systems Inc. QTS versiones anteriores a 4.3.6.1663 Build 20210504; versiones anteriores a 4.3.3.1624 Build 20210416. Este problema no afecta a: QNAP Systems Inc. QTS versión 4.5.3. QNAP Systems Inc. QuTS hero h4.5.3. QNAP Systems Inc. QuTScloud c4.5.5

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 (1)

Qnap — QTS

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-28800",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@qnapsecurity.com.tw",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.2
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@qnapsecurity.com.tw",
      "affectedData": [
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QTS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "4.3.6.1663 Build 20210504",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "4.3.3.1624 Build 20210416",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "4.5.3"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QuTS hero",
          "versions": [
            {
              "status": "unaffected",
              "version": "h4.5.3"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QuTScloud",
          "versions": [
            {
              "status": "unaffected",
              "version": "c4.5.5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-24T07:15:07.580",
  "references": [
    {
      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-21-28",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@qnapsecurity.com.tw"
    },
    {
      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-21-28",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@qnapsecurity.com.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A command injection vulnerability has been reported to affect QNAP NAS running legacy versions of QTS. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. This issue affects: QNAP Systems Inc. QTS versions prior to 4.3.6.1663 Build 20210504; versions prior to 4.3.3.1624 Build 20210416. This issue does not affect: QNAP Systems Inc. QTS 4.5.3. QNAP Systems Inc. QuTS hero h4.5.3. QNAP Systems Inc. QuTScloud c4.5.5."
    },
    {
      "lang": "es",
      "value": "Se ha reportado una vulnerabilidad de inyección de comandos que afecta a QNAP NAS ejecutando versiones heredadas de QTS. Si es explotado, esta vulnerabilidad permite a atacantes ejecutar comandos arbitrarios en una aplicación comprometida. Este problema afecta: QNAP Systems Inc. QTS versiones anteriores a 4.3.6.1663 Build 20210504; versiones anteriores a 4.3.3.1624 Build 20210416. Este problema no afecta a: QNAP Systems Inc. QTS versión 4.5.3. QNAP Systems Inc. QuTS hero h4.5.3. QNAP Systems Inc. QuTScloud c4.5.5"
    }
  ],
  "lastModified": "2026-06-17T03:46:53.173",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "71F75BCC-862B-4DD0-80F9-D89C05C787FE",
              "versionEndExcluding": "4.3.3.1624"
            },
            {
              "criteria": "cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4AEF176F-F64F-41AF-9C2C-4A1D888CE8D4",
              "versionEndExcluding": "4.3.6.1663",
              "versionStartIncluding": "4.3.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@qnapsecurity.com.tw"
}