{
  "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-2023-44191",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-44191",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-10-12T23:03:20.746Z",
    "updatedAt": "2024-09-19T14:14:17.438Z",
    "importedAt": "2026-10-24T01:56:58.683Z",
    "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": "Junos OS: QFX5000 Series and EX4000 Series: Denial of Service (DoS) on a large scale VLAN due to PFE hogging",
      "summary": "\nAn Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).\n\nOn all Junos OS QFX5000 Series and EX4000 Series platforms, when a high number of VLANs are configured, a specific DHCP packet will cause PFE hogging which will lead to dropping of socket connections.\n\nThis issue affects:\n\nJuniper Networks Junos OS on QFX5000 Series and EX4000 Series\n\n\n\n  *  21.1 versions prior to 21.1R3-S5;\n  *  21.2 versions prior to 21.2R3-S5;\n  *  21.3 versions prior to 21.3R3-S5;\n  *  21.4 versions prior to 21.4R3-S4;\n  *  22.1 versions prior to 22.1R3-S3;\n  *  22.2 versions prior to 22.2R3-S1;\n  *  22.3 versions prior to 22.3R2-S2, 22.3R3;\n  *  22.4 versions prior to 22.4R2.\n\n\n\n\nThis issue does not affect Juniper Networks Junos OS versions prior to 21.1R1\n\n\n\n",
      "affected": [
        {
          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "platforms": [
            "QFX5000 Series",
            "EX4000 Series"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "21.1R1"
            },
            {
              "version": "21.1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.1R3-S5"
            },
            {
              "version": "21.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.2R3-S5"
            },
            {
              "version": "21.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.3R3-S5"
            },
            {
              "version": "21.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.4R3-S4"
            },
            {
              "version": "22.1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.1R3-S3"
            },
            {
              "version": "22.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.2R3-S1"
            },
            {
              "version": "22.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.3R2-S2, 22.3R3"
            },
            {
              "version": "22.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.4R2"
            }
          ]
        }
      ]
    }
  }
}