CVE-2026-73459 — Security Advisory 0160
On affected platforms running Arista EOS with IS-IS configured, an unauthenticated attacker who can inject a specially crafted IS-IS LSP PDU can cause the legitimate LSP to be u…
Published: 2026-09-15 · CVSS: 7.0 · CVSS 4.0
On affected platforms running Arista EOS with IS-IS configured, an unauthenticated attacker who can inject a specially crafted IS-IS LSP PDU can cause the legitimate LSP to be unexpectedly purged from the IS-IS link-state database. This may result in traffic loss.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7