{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2021-38682",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-38682",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2022-01-14T01:00:19.308Z",
    "updatedAt": "2024-09-16T23:50:46.764Z",
    "importedAt": "2026-10-24T01:56:32.228Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard",
      "summary": "A stack buffer overflow vulnerability has been reported to affect QNAP device running QVR Elite, QVR Pro, QVR Guard. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 and later QTS 5.0.0: QVR Guard 2.1.3.0 and later",
      "affected": [
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Elite",
          "platforms": [
            "QuTS hero h5.0.0"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.4.0 (2021/12/06)"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Elite",
          "platforms": [
            "QuTS hero h4.5.4"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.4.0 (2021/12/06)"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Elite",
          "platforms": [
            "QTS 5.0.0"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.4.0 (2021/12/06)"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Elite",
          "platforms": [
            "QTS 4.5.4"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.4.0 (2021/12/06)"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Pro",
          "platforms": [
            "QTS 4.5.4"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.3.0 (2021/12/06)"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Pro",
          "platforms": [
            "QTS 5.0.0"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.3.0 (2021/12/06)"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Guard",
          "platforms": [
            "QTS 4.5.4"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.3.0"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QVR Guard",
          "platforms": [
            "QTS 5.0.0"
          ],
          "versions": [
            {
              "version": "unspecified",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.1.3.0"
            }
          ]
        }
      ]
    }
  }
}