{
  "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-2023-20213",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-20213",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-11-01T16:58:11.623Z",
    "updatedAt": "2025-06-12T14:37:44.323Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "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": "A vulnerability in the CDP processing feature of Cisco ISE could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of the CDP process on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes CDP traffic. An attacker could exploit this vulnerability by sending crafted CDP traffic to the device. A successful exploit could cause the CDP process to crash, impacting neighbor discovery and the ability of Cisco ISE to determine the reachability of remote devices. After a crash, the CDP process must be manually restarted using the cdp enable command in interface configuration mode.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco Identity Services Engine Software",
          "versions": [
            {
              "version": "2.6.0",
              "status": "affected"
            },
            {
              "version": "2.6.0 p1",
              "status": "affected"
            },
            {
              "version": "2.6.0 p2",
              "status": "affected"
            },
            {
              "version": "2.6.0 p3",
              "status": "affected"
            },
            {
              "version": "2.6.0 p5",
              "status": "affected"
            },
            {
              "version": "2.6.0 p6",
              "status": "affected"
            },
            {
              "version": "2.6.0 p7",
              "status": "affected"
            },
            {
              "version": "2.6.0 p8",
              "status": "affected"
            },
            {
              "version": "2.6.0 p9",
              "status": "affected"
            },
            {
              "version": "2.6.0 p10",
              "status": "affected"
            },
            {
              "version": "2.6.0 p11",
              "status": "affected"
            },
            {
              "version": "2.6.0 p12",
              "status": "affected"
            },
            {
              "version": "2.7.0",
              "status": "affected"
            },
            {
              "version": "2.7.0 p1",
              "status": "affected"
            },
            {
              "version": "2.7.0 p2",
              "status": "affected"
            },
            {
              "version": "2.7.0 p3",
              "status": "affected"
            },
            {
              "version": "2.7.0 p4",
              "status": "affected"
            },
            {
              "version": "2.7.0 p5",
              "status": "affected"
            },
            {
              "version": "2.7.0 p6",
              "status": "affected"
            },
            {
              "version": "2.7.0 p7",
              "status": "affected"
            },
            {
              "version": "2.7.0 p9",
              "status": "affected"
            },
            {
              "version": "3.0.0",
              "status": "affected"
            },
            {
              "version": "3.0.0 p1",
              "status": "affected"
            },
            {
              "version": "3.0.0 p2",
              "status": "affected"
            },
            {
              "version": "3.0.0 p3",
              "status": "affected"
            },
            {
              "version": "3.0.0 p4",
              "status": "affected"
            },
            {
              "version": "3.0.0 p5",
              "status": "affected"
            },
            {
              "version": "3.0.0 p6",
              "status": "affected"
            },
            {
              "version": "3.1.0",
              "status": "affected"
            },
            {
              "version": "3.1.0 p1",
              "status": "affected"
            },
            {
              "version": "3.1.0 p3",
              "status": "affected"
            },
            {
              "version": "3.1.0 p4",
              "status": "affected"
            },
            {
              "version": "3.1.0 p5",
              "status": "affected"
            },
            {
              "version": "3.1.0 p7",
              "status": "affected"
            },
            {
              "version": "3.2.0",
              "status": "affected"
            },
            {
              "version": "3.2.0 p1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}