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CVE-2026-73458

HIGHCVSS 8.2
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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).

Timeline
Published:September 15th, 2026 8:17 PM
Last modified:September 16th, 2026 7:08 PM
CVSS Scoring

CVSS v3: 8.2 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weaknesses (CWE)
CWE-303
References & Reports
Advisories, patches, and third-party reports

Source: NIST NVD · Data may lag official sources by up to one minute