---
id: CVE-2025-5090
title: CVX is not resilient to unexpected messages from a connected switch
summary: >-
  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 t…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-20
published: '2026-06-05'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-5090'
references:
  - url: >-
      https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126
    label: psirt@arista.com
tags:
  - nvd
epss: 0.00235
epssPercentile: 0.13001
ingestedAt: '2026-09-30T21:25:07.737Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.