CVE-2021-28494: Arista Metamako Operating System

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, authentication is bypassed by unprivileged users who are accessing the Web UI. This issue affects: Arista Metamako Operating System MOS-0.34.0 and prior releases

Affected products

• Arista Metamako Operating System: up to and including 0.34.0

Published 2021-09-09. Last modified 2026-06-17.