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CVE-2020-25847

Status: ModifiedHigh (8.8)—

This command injection vulnerability allows attackers to execute arbitrary commands in a compromised application. QNAP have already fixed this vulnerability in the following versions of QTS and QuTS hero.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Qnap — QTSQnap — Quts Hero

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-25847",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "twcert@cert.org.tw",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "twcert@cert.org.tw",
      "affectedData": [
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QTS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "4.5.1.1495",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "build 20201123"
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QTS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "4.4.3.1444"
            }
          ],
          "platforms": [
            "build 20200930"
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QTS",
          "versions": [
            {
              "status": "unaffected",
              "version": "4.3.x"
            },
            {
              "status": "unaffected",
              "version": "4.2.x"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QuTS hero",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "h4.5.1.1491",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "build 20201119"
          ]
        }
      ]
    }
  ],
  "published": "2020-12-29T07:15:13.213",
  "references": [
    {
      "url": "https://www.qnap.com/en/security-advisory/qsa-20-20",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "twcert@cert.org.tw"
    },
    {
      "url": "https://www.qnap.com/en/security-advisory/qsa-20-20",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "twcert@cert.org.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-77"
        },
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-77"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "This command injection vulnerability allows attackers to execute arbitrary commands in a compromised application. QNAP have already fixed this vulnerability in the following versions of QTS and QuTS hero."
    },
    {
      "lang": "es",
      "value": "Esta vulnerabilidad de inyección de comandos permite a atacantes ejecutar comandos arbitrarios en una aplicación comprometida. QNAP ya ha corregido esta vulnerabilidad en las siguientes versiones de QTS y QuTS hero"
    }
  ],
  "lastModified": "2026-06-17T03:07:23.180",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DEF3653A-C33D-4AE2-9DF1-4C66974BE83D",
              "versionEndExcluding": "4.5.1.1495"
            },
            {
              "criteria": "cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0E5F3C12-C5EE-48AF-A232-A04C539916E8",
              "versionEndExcluding": "h4.5.1.1491"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "twcert@cert.org.tw"
}