{
  "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-2024-21593",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-21593",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-12T14:54:08.039Z",
    "updatedAt": "2024-08-01T22:27:35.554Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "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: MX Series with MPC10, MPC11, LC9600, and MX304: A specific MPLS packet will cause a PFE crash",
      "summary": "An Improper Check or Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).\n\nIf an attacker sends a specific MPLS packet, which upon processing, causes an internal loop, that leads to a PFE crash and restart. Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition.\n \nCircuit cross-connect (CCC) needs to be configured on the device for it to be affected by this issue.\n\nThis issue only affects MX Series with MPC10, MPC11, LC9600, and MX304.\n\nThis issue affects:\nJuniper Networks Junos OS\n21.4 versions from 21.4R3 earlier than 21.4R3-S5;\n22.2 versions from 22.2R2 earlier than 22.2R3-S2;\n22.3 versions from 22.3R1 earlier than 22.3R2-S2;\n22.3 versions from 22.3R3 earlier than 22.3R3-S1\n22.4 versions from 22.4R1 earlier than 22.4R2-S2, 22.4R3;\n23.2 versions earlier than 23.2R1-S1, 23.2R2.",
      "affected": [
        {
          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "platforms": [
            "MX Series with MPC10",
            "MPC11",
            "LC9600",
            "MX304"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "21.4R3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.4R3-S5"
            },
            {
              "version": "22.1",
              "status": "unaffected"
            },
            {
              "version": "22.2R2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.2R3-S2"
            },
            {
              "version": "22.3R1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.3R2-S2"
            },
            {
              "version": "22.3R3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.3R3-S1"
            },
            {
              "version": "22.4R1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.4R2-S2, 22.4R3"
            },
            {
              "version": "23.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "23.2R1-S1, 23.2R2"
            }
          ]
        }
      ]
    }
  }
}