CVE-2026-73446 — Security Advisory 0160
On affected platforms running Arista EOS with IS-IS configured on a broadcast interface, an unauthenticated attacker can send a crafted IS-IS Hello Protocol Data Unit (PDU) that…
Published: 2026-09-15 · CVSS: 7.0 · CVSS 4.0
On affected platforms running Arista EOS with IS-IS configured on a broadcast interface, an unauthenticated attacker can send a crafted IS-IS Hello Protocol Data Unit (PDU) that causes the device to tear down an established IS-IS adjacency. This may result in traffic disruption and loss of IP reachability for prefixes advertised through that adjacency.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7