{
  "id": "CVE-2026-7473",
  "url": "https://spydr.io/cve/CVE-2026-7473",
  "published": "2026-06-05T17:17:02.850Z",
  "modified": "2026-06-17T11:02:29.070Z",
  "score": 6.9,
  "severity": "medium",
  "cvss_version": "4.0",
  "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "score_source": "arista.com",
  "epss": 0.00649,
  "epss_percentile": 0.49312,
  "exploited": true,
  "kev": {
    "added": "2026-06-09",
    "due": "2026-06-23",
    "action": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability",
    "notes": "https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 ; https://nvd.nist.gov/vuln/detail/CVE-2026-7473"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Arista Networks"
  ],
  "products": [
    "Arista Networks EOS"
  ],
  "cwes": [
    "CWE-1023"
  ],
  "description": "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. This issue has been reported as being exploited in the wild.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": 6.9,
    "cvss_v31": 5.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7473",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}