fkie_cve-2021-28799
Vulnerability from fkie_nvd
Published
2021-05-13 03:15
Modified
2025-11-03 15:07
Severity ?
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 .
References
security@qnapsecurity.com.twhttps://www.qnap.com/en/security-advisory/QSA-21-13Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.qnap.com/en/security-advisory/QSA-21-13Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28799US Government Resource
Impacted products
Vendor Product Version
qnap hybrid_backup_sync *
qnap qts 4.5.2
qnap hybrid_backup_sync *
qnap qts 4.3.6
qnap hybrid_backup_sync *
qnap qts 4.3.3
qnap qts 4.3.4
qnap hybrid_backup_sync *
qnap quts_hero h4.5.1
qnap hybrid_backup_sync *
qnap qutscloud *


To clipboard 

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  "cisaActionDue": "2022-04-21",
  "cisaExploitAdd": "2022-03-31",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "QNAP NAS Improper Authorization Vulnerability",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 ."
    },
    {
      "lang": "es",
      "value": "Se ha reportado una vulnerabilidad de autorizaci\u00f3n inapropiada que afecta al QNAP NAS que ejecuta HBS versi\u00f3n 3 (Hybrid Backup Sync). Si es explotada, la vulnerabilidad permite a atacantes remotos iniciar sesi\u00f3n en un dispositivo. Este problema afecta a: QNAP Systems Inc. HBS 3 versiones anteriores a v16.0.0415 en QTS versi\u00f3n 4.5.2; versiones anteriores a v3.0.210412 en QTS versi\u00f3n 4.3.6; versiones anteriores a v3.0.210411 en QTS versi\u00f3n 4.3.4; versiones anteriores a v3.0.210411 en QTS versi\u00f3n 4.3.3; versiones anteriores a 16.0.0419 en QuTS hero versiones h4.5.1; anterior a versi\u00f3n v16.0.0419 en QuTScloud versiones c4.5.1~c4.5.4. Este problema no afecta a: QNAP Systems Inc. HBS versi\u00f3n 2. QNAP Systems Inc. HBS versi\u00f3n 1.3"
    }
  ],
  "id": "CVE-2021-28799",
  "lastModified": "2025-11-03T15:07:48.747",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "HIGH",
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          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
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          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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  "published": "2021-05-13T03:15:06.843",
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      "source": "security@qnapsecurity.com.tw",
      "tags": [
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  "sourceIdentifier": "security@qnapsecurity.com.tw",
  "vulnStatus": "Analyzed",
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          "value": "NVD-CWE-Other"
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      "source": "nvd@nist.gov",
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}


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