CVE-2026-7473: Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Added to the CISA Known Exploited Vulnerabilities catalog on 09 Jun 2026. Vendor: Arista. Product: Extensible Operating System.

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. (due 23 Jun 2026)