CVE-2025-5089: Arista EOS SysDB Agent Denial of Service via Malformed CVX Client/Server Messages

Published Jun 5, 2026
·
Updated

In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of 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 already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.

Affected Software

2 affected components
Arista EOS SysDB Agent
Arista CloudVision (CVX) Server

Remediation

Information

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases: * 4.34.2F and later releases in the 4.34.x train * 4.33.5M and later releases in the 4.33.x train * 4.32.7M and later releases in the 4.32.x train * 4.31.9M and later releases in the 4.31.x train

Event History

Jun 5, 2026
CVE Published
via MITRE·03:44 PM
Data Sourced
via MITRE·03:44 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:16 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2025-5089?

The severity of CVE-2025-5089 is classified as high, with a score of 7.1.

2

How do I fix CVE-2025-5089?

To resolve CVE-2025-5089, you should upgrade to the remediated software versions: 4.34.2F or later, 4.33.5M or later, or 4.32.7M or later.

3

What are the potential consequences of CVE-2025-5089?

CVE-2025-5089 can lead to a denial of service, causing the Sysdb agent to crash when malformed messages are received.

4

Which systems are affected by CVE-2025-5089?

CVE-2025-5089 affects the Arista EOS SysDB Agent and the Arista CloudVision Server.

5

What type of vulnerability is CVE-2025-5089 classified as?

CVE-2025-5089 is classified under CWE: Input Validation vulnerabilities.

Company

Resources

Contact

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CVE-2025-5089 - Arista EOS SysDB Agent Denial of Service via Malformed CVX Client/Server Messages - SecAlerts