{
  "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-2026-20307",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-20307",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-16T16:55:55.072Z",
    "updatedAt": "2026-09-17T11:39:24.811Z",
    "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 Identity Services Engine Remote Code Execution Vulnerability",
      "summary": "A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least low-privileged administrative credentials.\r\n\r\nThis vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco Identity Services Engine Software",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "3.1.0",
              "status": "affected"
            },
            {
              "version": "3.1.0 p1",
              "status": "affected"
            },
            {
              "version": "3.1.0 p3",
              "status": "affected"
            },
            {
              "version": "3.1.0 p2",
              "status": "affected"
            },
            {
              "version": "3.2.0",
              "status": "affected"
            },
            {
              "version": "3.1.0 p4",
              "status": "affected"
            },
            {
              "version": "3.1.0 p5",
              "status": "affected"
            },
            {
              "version": "3.2.0 p1",
              "status": "affected"
            },
            {
              "version": "3.1.0 p6",
              "status": "affected"
            },
            {
              "version": "3.2.0 p2",
              "status": "affected"
            },
            {
              "version": "3.1.0 p7",
              "status": "affected"
            },
            {
              "version": "3.3.0",
              "status": "affected"
            },
            {
              "version": "3.2.0 p3",
              "status": "affected"
            },
            {
              "version": "3.2.0 p4",
              "status": "affected"
            },
            {
              "version": "3.1.0 p8",
              "status": "affected"
            },
            {
              "version": "3.2.0 p5",
              "status": "affected"
            },
            {
              "version": "3.2.0 p6",
              "status": "affected"
            },
            {
              "version": "3.1.0 p9",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 2",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 1",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 3",
              "status": "affected"
            },
            {
              "version": "3.4.0",
              "status": "affected"
            },
            {
              "version": "3.2.0 p7",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 4",
              "status": "affected"
            },
            {
              "version": "3.4 Patch 1",
              "status": "affected"
            },
            {
              "version": "3.1.0 p10",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 5",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 6",
              "status": "affected"
            },
            {
              "version": "3.4 Patch 2",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 7",
              "status": "affected"
            },
            {
              "version": "3.4 Patch 3",
              "status": "affected"
            },
            {
              "version": "3.5.0",
              "status": "affected"
            },
            {
              "version": "3.4 Patch 4",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 8",
              "status": "affected"
            },
            {
              "version": "3.2 Patch 8",
              "status": "affected"
            },
            {
              "version": "3.5 Patch 1",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 9",
              "status": "affected"
            },
            {
              "version": "3.2 Patch 9",
              "status": "affected"
            },
            {
              "version": "3.4 Patch 5",
              "status": "affected"
            },
            {
              "version": "3.5 Patch 3",
              "status": "affected"
            },
            {
              "version": "3.5 Patch 2",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 10",
              "status": "affected"
            },
            {
              "version": "3.3 Patch 11",
              "status": "affected"
            },
            {
              "version": "3.4 Patch 6",
              "status": "affected"
            },
            {
              "version": "3.2 Patch 10",
              "status": "affected"
            },
            {
              "version": "3.1.0 p72",
              "status": "affected"
            },
            {
              "version": "3.1.0 p11",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}