On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay/snooping configured with the information option (Option 82), or with the DHCP server configured with match criteria based on the information option, an unauthenticated attacker connected to a client-facing VLAN(s) where the relay is configured can send a specially crafted packet that causes the DHCP Relay service to restart.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arista Eos | — | Upgrade to a remediated software version. | Sep 10, 2026 | Sep 9, 2026 |
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