CVE-2019-14810: Arista Extensible Operating System

Medium severity, CVSS 5.9. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability has been found in the implementation of the Label Distribution Protocol (LDP) protocol in EOS. Under race conditions, the LDP agent can establish an LDP session with a malicious peer potentially allowing the possibility of a Denial of Service (DoS) attack on route updates and in turn potentially leading to an Out of Memory (OOM) condition that is disruptive to traffic forwarding. Affected EOS versions include: 4.22 release train: 4.22.1F and earlier releases 4.21 release train: 4.21.0F - 4.21.2.3F, 4.21.3F - 4.21.7.1M 4.20 release train: 4.20.14M and earlier releases 4.19 release train: 4.19.12M and earlier releases End of support release trains (4.18 and 4.17)

Affected products

• Arista Extensible Operating System: from 4.19, up to and including 4.19.12m; from 4.20, up to and including 4.20.14m; from 4.21.0f, up to and including 4.21.2.3f; from 4.21.3f, up to and including 4.21.7; version 4.17 only; version 4.18 only; …

Published 2019-10-10. Last modified 2026-06-17.