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CVE PROGRAM SOURCE RECORD9.5 Critical

CVE-2026-73453

Security Advisory 0174

Description

An unauthenticated P4Runtime (Programming Protocol-Independent Packet Processors Runtime) client can achieve arbitrary code execution under certain conditions on affected platforms running Arista EOS configured with P4Runtime. P4Runtime is disabled by default in Arista EOS. By crafting a malicious packet during the initiation of a P4Runtime session, an attacker can obtain complete administrative control over the compromised switch. This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

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

  • 4.36.0F to ≤ 4.36.1Faffected
  • 4.35.0F to ≤ 4.35.5Maffected
  • 4.34.0F to ≤ 4.34.7Maffected
  • 4.33.0F to < 4.34.0Faffected
  • 4.32.0F to < 4.33.0Faffected
  • 4.31.0F to < 4.32.0Faffected
  • 4.30.0F to < 4.31.0Faffected
  • 4.29.2F to < 4.30.0Faffected

References