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CVE-2026-73453

Medienbericht

Security Advisory 0174

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerArista Networks
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Produkt EOS
Default Statusunaffected
Version <= 4.36.1F
Version 4.36.0F
Status affected
Version <= 4.35.5M
Version 4.35.0F
Status affected
Version <= 4.34.7M
Version 4.34.0F
Status affected
Version 4.33.0F
Version < 4.34.0F
Status affected
Version 4.32.0F
Version < 4.33.0F
Status affected
Version 4.31.0F
Version < 4.32.0F
Status affected
Version 4.30.0F
Version < 4.31.0F
Status affected
Version 4.29.2F
Version < 4.30.0F
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.75% 0.531
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
psirt@arista.com 9.5 0 0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
psirt@arista.com 10 3.9 6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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VulnDex Intel
Media Report
23.09.2026 17:01
https://www.arista.com/en/support/advisories-notices/security-advisory/24730-security-advisory-0174