Medium 6.5Published Jun 5, 2026

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

Updated under an hour ago (Oct 26, 2026, 3:23 PM ET)

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It affects Arista Networks EOS / CloudVision eXchange (CVX). Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Arista Networks EOS / CloudVision eXchange (CVX)

Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Arista
NVD analysis: Awaiting Analysis
Record last updated: Jun 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Arista Networks EOS / CloudVision eXchange (CVX) arista_networks:eos_cloudvision_exchange_cvx (from the name)	from 4.34.0F through 4.34.1F; from 4.33.0M through 4.33.4M; from 4.32.0M through 4.32.6M; from 4.31.0 before 4.32.0; from 4.30.0 before 4.31.0	CNA record

References

References

https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.