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EUVD-2026-34858

🗓️ 05 Jun 2026 16:22:47Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 3 Views

Arista EOS tunnel decapsulation bug forwards unconfigured tunnel traffic with matching decap IP; protocol not verified; exploited.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-7473
5 Jun 202616:22
attackerkb
Arista
Security Advisory 0137
5 May 202600:00
arista
CVE
CVE-2026-7473
5 Jun 202616:22
cve
Cvelist
CVE-2026-7473 Arista EOS Unexpected Tunnel Protocol Decapsulation and Forwarding Bypass
5 Jun 202616:22
cvelist
NVD
CVE-2026-7473
5 Jun 202617:17
nvd
Positive Technologies
PT-2026-46983
5 Jun 202600:00
ptsecurity
[
  {
    "enisaIdVendor": [
      {
        "id": "c5b7b37c-3907-35af-aa7e-638de5a5e983",
        "vendor": {
          "name": "Arista Networks"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "0ac4fad8-a872-3138-bc40-1e425eea7f5c",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "* ≤4.30"
      },
      {
        "id": "326d97fe-83d1-32a3-b2c1-b6a1b3373bf8",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "4.36.0"
      },
      {
        "id": "5ccc1cec-fddf-3192-9683-50586a54bead",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "4.34.0 ≤4.34"
      },
      {
        "id": "66e6792d-679d-3da6-bdbc-0fb0346619e1",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "4.31.0 ≤4.31"
      },
      {
        "id": "767bc541-55f6-3da1-a553-bc077e027b32",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "4.32.0 ≤4.32"
      },
      {
        "id": "76a0ce22-2168-3fd8-8bdd-1493db7d77f0",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "4.33.0 ≤4.33"
      },
      {
        "id": "9a3dc2fa-132c-3750-a7bf-93943da65189",
        "product": {
          "name": "EOS",
          "vendor": {
            "name": "Arista Networks"
          }
        },
        "product_version": "4.35.0 ≤4.35"
      }
    ]
  }
]

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05 Jun 2026 16:22Current
5.4Medium risk
Vulners AI Score5.4
CVSS 46.9
CVSS 3.15.8
3