{
  "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-2024-20509",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-20509",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-10-02T18:24:42.768Z",
    "updatedAt": "2025-06-04T20:14:04.575Z",
    "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": null,
      "summary": "A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to hijack an AnyConnect VPN session or cause a denial of service (DoS) condition for individual users of the AnyConnect VPN service on an affected device.\r\n\r This vulnerability is due to weak entropy for handlers that are used during the VPN authentication process as well as a race condition that exists in the same process. An attacker could exploit this vulnerability by correctly guessing an authentication handler and then sending crafted HTTPS requests to an affected device. A successful exploit could allow the attacker to take over the AnyConnect VPN session from a target user or prevent the target user from establishing an AnyConnect VPN session with the affected device.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco Meraki MX Firmware",
          "versions": [
            {
              "version": "-16-2",
              "status": "affected"
            },
            {
              "version": "-16-3",
              "status": "affected"
            },
            {
              "version": "-16-4",
              "status": "affected"
            },
            {
              "version": "-16-5",
              "status": "affected"
            },
            {
              "version": ".16.6",
              "status": "affected"
            },
            {
              "version": "-3",
              "status": "affected"
            },
            {
              "version": "-6",
              "status": "affected"
            },
            {
              "version": "-7",
              "status": "affected"
            },
            {
              "version": "-8",
              "status": "affected"
            },
            {
              "version": "-9",
              "status": "affected"
            },
            {
              "version": "-10",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}