CVE-2026-120978 · Infrastructure
NO FIX YET
On Arista EOS devices running BGP-LS with the Dynamic Path Selection consumer role, a crafted message can make the BGP agent restart unexpectedly. The attacker must already hold an authenticated BGP-LS session with the device, and no Arista Pathfinder deployment is needed.
first public Nov 10, 2026 · 1 source
Could this affect your app?
Free first check from your website. Connect your repo for the full answer.
Only Arista EOS devices that run BGP-LS and have the Dynamic Path Selection consumer role configured are in scope. An attacker must already have an authenticated BGP-LS session with the device, so devices without BGP-LS or without that role are not affected. Teams running Arista switches or routers with this configuration should look at it; the sources do not state other exposure.
Not affected if no-bgp-ls, no-dps-consumer-role, unauthenticated-only
Who cares arista-eos, bgp-ls, network
No fix yet, per the sources.
On affected Arista EOS platforms running Border Gateway Protocol with Link State ( BGP-LS) and configured with the Dynamic Path Selection (DPS) consumer role, an attacker who has established an authenticated BGP-LS session with the device can send a crafted message to cause the BGP agent to restart unexpectedly. An Arista Pathfinder deployment is not required.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Check it with your coding agent
It reads this page and tells you if your code is affected.
Are you affected?
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.