{
  "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-2023-27992",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-27992",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-06-19T11:42:41.774Z",
    "updatedAt": "2025-10-21T23:05:45.675Z",
    "importedAt": "2026-10-24T01:56:53.804Z",
    "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": null,
      "summary": "The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.",
      "affected": [
        {
          "vendor": "Zyxel",
          "product": "NAS326 firmware",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "< V5.21(AAZF.14)C0",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Zyxel",
          "product": "NAS540 firmware",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "< V5.21(AATB.11)C0",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Zyxel",
          "product": "NAS542 firmware",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "< V5.21(ABAG.11)C0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}