CVE-2026-121369

MediumCVSS 5.3/10Last modified Nov 12, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Arista Networks	EOS	>= 4.34.2F, <= 4.34.7M; >= 4.35.0F, <= 4.35.6M; >= 4.36.0F, <= 4.36.1M

References

https://www.arista.com/en/support/advisories-notices/security-advisory/25047-security-advisory-0225

Timeline

Published: Nov 10, 2026
Last modified: Nov 12, 2026
NVD status: Awaiting Analysis

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