OCTOBER 13, 2026
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Case File

CVE-2026-73435

HIGH · CVSS 8.2 EPSS 0.19%

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

Arista EOS systems running OSPFv2 are vulnerable to adjacency flapping and packet loss when exposed to specially crafted OSPFv2 packets from unauthenticated attackers on the same broadcast segment. This vulnerability can significantly disrupt routing within the OSPF domain, leading to potential network outages. Network administrators and security teams managing Arista EOS devices should prioritize this issue to mitigate risks to network stability and performance.

CVE
CVE-2026-73435
Severity
HIGH
CVSS
8.2
EPSS
0.19%

Original NVD Description

On affected platforms running Arista EOS with Open Shortest Path First version 2 (OSPFv2) configured, a specially crafted OSPFv2 packet from an unauthenticated attacker on the same broadcast segment, with OSPFv2 authentication configured can cause adjacency flapping and packet loss. The disruption can affect routing across the broader OSPF domain.