Vulnerability Analysis
Arista EOS Unexpected Tunnel Protocol Decapsulation and Forwarding Bypass
CVE-2026-7473
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.
CISA KEV
CVSS Base Score
5.8
MEDIUM
Exploitability:3.9
Impact Score:1.5
Temporal Score:-
EPSS:0.84%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-06-09
Ransomware Use
Unknown
KEV Due Date
2026-06-23
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
0.836%
EPSS Percentile
53.0th pct
GHSA ID
GitHub Severity
MODERATE
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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