CVE-2026-73456 [CRITICAL] – Under certain circumstances on affected platforms running Arista EOS with gRPC Network Pac

Under certain circumstances on affected platforms running Arista EOS with gRPC Network Packet Sampling Interface (gNPSI) enabled, an unauthenticated gNPSI client can craft a malicious request to allow arbitrary code execution, granting an attacker full administrative control over the compromised switch.