CVE-2026-73457: Arista Networks Eos

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Under certain circumstances on affected platforms running Arista EOS with gRPC Network Packet Sampling Interface (gNPSI) enabled, the gNPSI client credentials might be logged in clear text in local or remote accounting logs to authenticated users.

Affected products

• Arista Networks Eos: from 4.36.0, up to and including 4.36.1F; from 4.35.0, up to and including 4.35.5M; from 4.34.2F, up to and including 4.34.7M

Published 2026-09-16. Last modified 2026-09-17.