Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Technical Severity

CVSS v3.1 Metrics

MEDIUM

5.8 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Exploitation Likelihood

EPSS Prediction

22.47 %

Predictive Probability

Percentile Rank

96.0 th

Documented as more likely to be exploited than 96.0% of known CVEs.

Detection Date

Jun 09, 2026

Remediation Due

Jun 23, 2026

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

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

External Intelligence

https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-7473