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CVE-2026-120979

HIGH CVSS: 8.1 Published: 2026-11-10 Modified: 2026-11-10

Description

This vulnerability affects customers using Arista Pathfinder for WAN path selection with Border Gateway Protocol-Link State (BGP-LS) configured for Dynamic Path Selection (DPS). On affected platforms running Arista EOS with BGP-LS configured for DPS, an attacker who has established an authenticated BGP-LS session with the device can send a specially crafted BGP packet to cause incorrect WAN path selection and disrupt traffic forwarding.

Affected Platforms

Unknown

Weakness Type

CWE-1289

References