Skip to content
CVE PROGRAM SOURCE RECORD9.2 Critical

CVE-2026-73458

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 rou

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Arista

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).

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Arista Networks EOS

Default version status: unaffected

  • 4.36.0 to ≤ 4.36.1Faffected
  • 4.35.0 to ≤ 4.35.5Maffected
  • 4.34.0 to ≤ 4.34.7Maffected
  • 4.33.0 to ≤ 4.33.8Maffected

References