CVE Watch7 oct 2026

CVE-2026-7473

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

CVSS

5.8

Medio

EPSS

0.6%

p50

KEV

SÍ

9 jun 2026

Exploit Today

0-100

Publicado: 5 jun 2026 · Última mod.: 7 oct 2026 · CWE-1023

EPSS · 30d

0.6%EPSS · 30 días1.1%

2026-09-172026-10-15

Ficha del catálogo KEV

Producto

Arista / Extensible Operating System

Vulnerabilidad

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Añadido a KEV

9 jun 2026

Remediar antes de

23 jun 2026

Uso conocido en ransomware

Descripción resumida

Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination IP matching its configured decapsulation IP.

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 ; https://nvd.nist.gov/vuln/detail/CVE-2026-7473

Descripción técnica

On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic. This issue has been reported as being exploited in the wild.

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