{
  "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-2025-66277",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-66277",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2026-02-11T12:15:43.851Z",
    "updatedAt": "2026-02-26T14:44:26.986Z",
    "importedAt": "2026-10-24T01:57:44.935Z",
    "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": "QTS, QuTS hero",
      "summary": "A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.8.3350 build 20251216 and later\nQuTS hero h5.3.2.3354 build 20251225 and later\nQuTS hero h5.2.8.3350 build 20251216 and later",
      "affected": [
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QTS",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5.2.x",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "5.2.8.3350 build 20251216"
            }
          ]
        },
        {
          "vendor": "QNAP Systems Inc.",
          "product": "QuTS hero",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "h5.3.x",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "h5.3.2.3354 build 20251225"
            },
            {
              "version": "h5.2.x",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "h5.2.8.3350 build 20251216"
            }
          ]
        }
      ]
    }
  }
}