CVE-2026-121369: Security Advisory 0225

Published Nov 10, 2026

Updated

On affected platforms running Arista EOS under specific link configurations an attacker with direct connectivity to the system may cause system CPU and memory utilization to increase considerably leading to slow responsiveness and eventually may cause the system to reboot.

Affected Software

1 affected component

Arista EOS

Event History

Nov 10, 2026

CVE Published

via MITRE·08:10 PM

Data Sourced

via MITRE·08:10 PM

DescriptionSeverityWeakness

Frequently Asked Questions

Who is exposed to this issue?

Affected Arista EOS platforms are exposed only under specific link configurations. An attacker must have direct connectivity to the system.

What impact can exploitation have?

Exploitation can substantially increase system CPU and memory utilization, causing slow responsiveness and potentially leading to a system reboot.

Does exploitation require authentication or user interaction?

No privileges or user interaction are required according to the provided vector. The attacker does need direct network connectivity to the affected system.

CVE-2026-121369: Security Advisory 0225

Affected Software

Event History

Frequently Asked Questions

Who is exposed to this issue?

What impact can exploitation have?

Does exploitation require authentication or user interaction?

Company

Resources

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Frequently Asked Questions

Who is exposed to this issue?

What impact can exploitation have?

Does exploitation require authentication or user interaction?