SEPTEMBER 17, 2026
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Case File

CVE-2026-73458

HIGH · CVSS 8.2 EPSS 0.38%

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection (BFD) sessions are vulnerable to specially crafted packets that can disrupt BFD sessions, potentially leading to significant network instability as routing protocols rely on these sessions for status monitoring. Organizations utilizing Arista EOS in their network infrastructure should prioritize addressing this vulnerability to prevent unintended routing changes and maintain network reliability.

CVE
CVE-2026-73458
Severity
HIGH
CVSS
8.2
EPSS
0.38%

Original NVD Description

On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection (BFD) sessions configured, a specially crafted packet can cause the BFD session(s) to go down. This may result in undesirable network changes because various routing protocols monitor status on BFD session(s).