CVE-2026-7473

Product

Arista / Extensible Operating System

Vulnerability

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Added to KEV

Jun 9, 2026

Remediate by

Jun 23, 2026

Known ransomware use

No

Summary 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