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CVE-2021-28801

Estado: ModificadaAlta (7.5)—

An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.

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 — QSS

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-28801",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "security@qnapsecurity.com.tw",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.1,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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        "impactScore": 1.4,
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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        "impactScore": 3.6,
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  "affected": [
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      "affectedData": [
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          "vendor": "QNAP Systems Inc.",
          "product": "QSS",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.0.2 build 20210122",
              "versionType": "custom"
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          "platforms": [
            "QSW-M2108-2C"
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          "vendor": "QNAP Systems Inc.",
          "product": "QSS",
          "versions": [
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              "version": "unspecified",
              "lessThan": "1.0.2 build 20210122",
              "versionType": "custom"
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          "platforms": [
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          "vendor": "QNAP Systems Inc.",
          "product": "QSS",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.0.2 build 20210122",
              "versionType": "custom"
            }
          ],
          "platforms": [
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  ],
  "published": "2021-06-11T07:15:06.490",
  "references": [
    {
      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-21-23",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@qnapsecurity.com.tw"
    },
    {
      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-21-23",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@qnapsecurity.com.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C."
    },
    {
      "lang": "es",
      "value": "Se ha reportado una vulnerabilidad de lectura fuera de límites que afecta a determinados switches de QNAP que ejecutan QSS. Si es explotada, esta vulnerabilidad permite a atacantes leer información confidencial en el sistema. Este problema afecta: QNAP Systems Inc. versiones de QSS versiones anteriores a 1.0.2 build 20210122 en QSW-M2108-2C; versiones anteriores a 1.0.2 build 20210122 en QSW-M2108-2S; versiones anteriores a 1.0.2 build 20210122 en QSW-M2108R-2C"
    }
  ],
  "lastModified": "2026-06-17T03:46:53.300",
  "configurations": [
    {
      "nodes": [
        {
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              "vulnerable": true,
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}