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CVE-2026-73458

EOS · Vulnerability

CVSS 3.1 8.2 HIGHCVSS 4.0 9.2 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-73458

Published

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).

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Affected versions, risk and source history

Related advisories and sources

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-73458 · CVE overview and exploitation status

cve-program · CVE-2026-73458

Related changes

Linked by CVE identifier

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An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 13:11 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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