{
  "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-2026-20321",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-20321",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-07T16:11:55.074Z",
    "updatedAt": "2026-10-08T15:33:31.802Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "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": "Cisco Application Policy Infrastructure Controller API Command Injection Vulnerability",
      "summary": "A vulnerability in the web-based management API for Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, remote attacker to execute arbitrary commands as the root user. To exploit this vulnerability, the attacker must have valid administrative credentials.\r\n\r\nThis vulnerability is due to insufficient input validation of user-controlled command arguments. An attacker could exploit this vulnerability by authenticating using the API and sending crafted input. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of an affected device with root-level privileges.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco Application Policy Infrastructure Controller (APIC)",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "5.3(1d)",
              "status": "affected"
            },
            {
              "version": "5.3(2a)",
              "status": "affected"
            },
            {
              "version": "5.3(2b)",
              "status": "affected"
            },
            {
              "version": "5.3(2c)",
              "status": "affected"
            },
            {
              "version": "5.3(2d)",
              "status": "affected"
            },
            {
              "version": "5.3(2e)",
              "status": "affected"
            },
            {
              "version": "5.3(2f)",
              "status": "affected"
            },
            {
              "version": "6.1(5e)",
              "status": "affected"
            },
            {
              "version": "6.2(1f)",
              "status": "affected"
            },
            {
              "version": "6.2(1g)",
              "status": "affected"
            },
            {
              "version": "6.2(2e)",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}