What’s Vulnerable › Vulnerabilities

CVE-2023-24511: On affected platforms running Arista EOS with SNMP configured, a specially crafted packet can cause a memory leak in the snmpd process.

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-04-12 · updated 2026-06-17
• Weakness: CWE-401

Description

On affected platforms running Arista EOS with SNMP configured, a specially crafted packet can cause a memory leak in the snmpd process. This may result in the snmpd processing being terminated (causing SNMP requests to time out until snmpd is automatically restarted) and potential memory resource exhaustion for other processes on the switch. The vulnerability does not have any confidentiality or integrity impacts to the system.

Affected products

• Arista Networks EOS: from 4.26.0 before 4.26.10m; from 4.27.0 before 4.27.9m; from 4.28.0 before 4.28.6m; from 4.29.0 before 4.29.2f — fixed in 4.26.10m, 4.27.9m, 4.28.6m, 4.29.2f

How to fix

Upgrade to a fixed version: Arista Networks EOS 4.26.10m, 4.27.9m, 4.28.6m, 4.29.2f. Check the vendor advisory for mitigations.

References

• https://www.arista.com/en/support/advisories-notices/security-advisory/17239-security-advisory-0084
• https://www.arista.com/en/support/advisories-notices/security-advisory/17239-security-advisory-0084

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