CVE-2021-28499: Arista Metamako Operating System

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, user account passwords set in clear text could leak to users without any password. This issue affects: Arista Metamako Operating System MOS-0.18 and post releases in the MOS-0.1x train All releases in the MOS-0.2x train MOS-0.31.1 and prior releases in the MOS-0.3x train

Affected products

• Arista Metamako Operating System: from 0.10.0, up to and including 0.18.0; from 0.20.0, before 0.32.0 (fixed in 0.32.0)

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