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

7.1HIGH

Key Information:

Vendor

Arista Networks

Status
Eos / Cloudvision Exchange (cvx)
Vendor
CVE Published:
5 June 2026

What is CVE-2025-5090?

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.

Affected Version(s)

EOS / CloudVision eXchange (CVX) CloudVision eXchange 4.34.0F <= 4.34.1F

EOS / CloudVision eXchange (CVX) CloudVision eXchange 4.33.0M <= 4.33.4M

EOS / CloudVision eXchange (CVX) CloudVision eXchange 4.32.0M <= 4.32.6M

References

https://www.arista.com/en/support/advisories-notices/secu...
vendor-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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