CVE-2026-7473

MEDIUMCVSS 5.8Known Exploited

CISA Known Exploited Vulnerability

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

Remediation deadline: June 23, 2026

Description

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.

Timeline

Published:June 5th, 2026 5:17 PM

Last modified:October 7th, 2026 7:17 PM

Added to KEV:June 9th, 2026

CVSS Scoring

CVSS v3: 5.8 (MEDIUM)

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

Affected Software

From NVD CPE configuration data

Vendors

arista

Products

eos

Weaknesses (CWE)

CWE-1023

References & Reports

Advisories, patches, and third-party reports

https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137Broken Link
https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137Mitigation
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473US Government Resource

Source: NIST NVD · Data may lag official sources by up to one minute