CVE-2026-7473

MediumCVSS 5.8/10Known exploited (CISA KEV)Last modified Oct 7, 2026

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.

Metrics

CVSS 3.1 5.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weakness enumeration

CWE-1023

Affected software

No affected versions have been published.

Timeline

Published
Jun 5, 2026
Last modified
Oct 7, 2026
Added to CISA KEV
Jun 9, 2026
NVD status
Analyzed

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CVE-2026-7473: Medium severity, CVSS 5.8 | Vulnix