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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-73444

On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the

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Status
Published
Published
Updated
Assigning organization
Arista

Description

On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the virtual router master role, enabling the attacker to intercept, modify, or discard traffic that hosts on the segment send to the virtual gateway address.

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 ≤ 4.33.9Maffected
  • 0affected

References