{
  "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-2026-7473",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-7473",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-05T16:22:47.989Z",
    "updatedAt": "2026-10-07T18:27:31.678Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "Arista EOS Unexpected Tunnel Protocol Decapsulation and Forwarding Bypass",
      "summary": "On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic.\n\n\n\nThis issue has been reported as being exploited in the wild.",
      "affected": [
        {
          "vendor": "Arista Networks",
          "product": "EOS",
          "platforms": [
            "7020R Series",
            "7280R/R2 Series",
            "7500R/R2 Series",
            "7280R3 Series (Limited exposure: IP-in-IPv6 and GUEv6)",
            "7500R3 Series (Limited exposure: IP-in-IPv6 and GUEv6)",
            "7800R3 Series (Limited exposure: IP-in-IPv6 and GUEv6)"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.36.0",
              "status": "affected",
              "versionType": "custom"
            },
            {
              "version": "4.35.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.35"
            },
            {
              "version": "4.34.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.34"
            },
            {
              "version": "4.33.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.33"
            },
            {
              "version": "4.32.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.32"
            },
            {
              "version": "4.31.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.31"
            },
            {
              "version": "*",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.30"
            }
          ]
        }
      ]
    }
  }
}