Description
On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection (BFD) sessions configured, a specially crafted packet can cause the BFD session(s) to go down. This may result in undesirable network changes because various routing protocols monitor status on BFD session(s).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Arista Networks | EOS | 4.36.0 – ≤ 4.36.1F, 4.35.0 – ≤ 4.35.5M, 4.34.0 – ≤ 4.34.7M, 4.33.0 – ≤ 4.33.8M | — |
Advisories 1
- WID-SEC-2026-3410 Arista EOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 15, 2026