{
  "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-2025-20316",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-20316",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-24T17:16:45.155Z",
    "updatedAt": "2025-09-24T17:28:43.201Z",
    "importedAt": "2026-10-24T01:57:24.991Z",
    "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 access control list (ACL) programming of Cisco IOS XE Software for Cisco Catalyst 9500X and 9600X Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL on an affected device.\r\n\r This vulnerability is due to the flooding of traffic from an unlearned MAC address on a switch virtual interface (SVI) that has an egress ACL applied. An attacker could exploit this vulnerability by causing the VLAN to flush its MAC address table. This condition can also occur if the MAC address table is full. A successful exploit could allow the attacker to bypass an egress ACL on an affected device.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco IOS XE Software",
          "versions": [
            {
              "version": "17.7.1",
              "status": "affected"
            },
            {
              "version": "17.10.1",
              "status": "affected"
            },
            {
              "version": "17.10.1b",
              "status": "affected"
            },
            {
              "version": "17.8.1",
              "status": "affected"
            },
            {
              "version": "17.9.1",
              "status": "affected"
            },
            {
              "version": "17.9.2",
              "status": "affected"
            },
            {
              "version": "17.9.3",
              "status": "affected"
            },
            {
              "version": "17.9.4",
              "status": "affected"
            },
            {
              "version": "17.9.5",
              "status": "affected"
            },
            {
              "version": "17.9.4a",
              "status": "affected"
            },
            {
              "version": "17.9.6",
              "status": "affected"
            },
            {
              "version": "17.9.6a",
              "status": "affected"
            },
            {
              "version": "17.9.7",
              "status": "affected"
            },
            {
              "version": "17.11.1",
              "status": "affected"
            },
            {
              "version": "17.12.1",
              "status": "affected"
            },
            {
              "version": "17.12.2",
              "status": "affected"
            },
            {
              "version": "17.12.3",
              "status": "affected"
            },
            {
              "version": "17.12.4",
              "status": "affected"
            },
            {
              "version": "17.12.5",
              "status": "affected"
            },
            {
              "version": "17.13.1",
              "status": "affected"
            },
            {
              "version": "17.14.1",
              "status": "affected"
            },
            {
              "version": "17.15.1",
              "status": "affected"
            },
            {
              "version": "17.15.2",
              "status": "affected"
            },
            {
              "version": "17.15.3",
              "status": "affected"
            },
            {
              "version": "17.15.2b",
              "status": "affected"
            },
            {
              "version": "17.16.1",
              "status": "affected"
            },
            {
              "version": "17.17.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}