CVE-2026-7473

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Arista — Extensible Operating System

Added to KEV catalog: 9 June 2026
Federal remediation due date: 23 June 2026
Weakness classification (CWE): CWE-1023

CISA Description

Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination IP matching its configured decapsulation IP.

Required 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.

Notes

https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 ; https://nvd.nist.gov/vuln/detail/CVE-2026-7473

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