CVE-2025-5090 MEDIUM

CVE-2025-5090: Arista CloudVision Exchange Cluster Instability via Unexpected Switch Messages

Vendor Arista Networks
Product EOS / CloudVision eXchange (CVX)
Weakness CWE-20 · Input validation
Published June 5, 2026
Last update June 9, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

CVX is not resilient to unexpected messages from a connected switch. This leads to agent crashes on CVX causing instability in the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to have a high privilege access to the connected switch to be able to send custom TCP packets to the CVX.

Key dates

02Disclosure timeline

June 5, 2026 CVE published
June 9, 2026 Record updated