{
  "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-2024-21603",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-21603",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-01-12T00:54:22.697Z",
    "updatedAt": "2025-06-17T21:09:19.638Z",
    "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: Gathering statistics in a scaled SCU/DCU configuration will lead to a device crash",
      "summary": "\nAn Improper Check for Unusual or Exceptional Conditions vulnerability in the kernel of Juniper Network Junos OS on MX Series allows a network based attacker with low privileges to cause a denial of service.\n\nIf a scaled configuration for Source class usage (SCU) / destination class usage (DCU) (more than 10 route classes) is present and the SCU/DCU statistics are gathered by executing specific SNMP requests or CLI commands, a 'vmcore' for the RE kernel will be seen which leads to a device restart. Continued exploitation of this issue will lead to a sustained DoS.\n\nThis issue only affects MX Series devices with MPC10, MPC11 or LC9600, and MX304. No other MX Series devices are affected.\n\nThis issue affects Juniper Networks Junos OS:\n\n\n\n  *  All versions earlier than 20.4R3-S9;\n  *  21.2 versions earlier than 21.2R3-S6;\n  *  21.3 versions earlier than 21.3R3-S5;\n  *  21.4 versions earlier than 21.4R3;\n  *  22.1 versions earlier than 22.1R3;\n  *  22.2 versions earlier than 22.2R2;\n  *  22.3 versions earlier than 22.3R2.\n\n\n\n\n\n\n",
      "affected": [
        {
          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "platforms": [
            "MX Series"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "20.4R3-S9"
            },
            {
              "version": "21.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.2R3-S6"
            },
            {
              "version": "21.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.3R3-S5"
            },
            {
              "version": "21.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.4R3"
            },
            {
              "version": "22.1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.1R3"
            },
            {
              "version": "22.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.2R2"
            },
            {
              "version": "22.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.3R2"
            }
          ]
        }
      ]
    }
  }
}