CVE-2024-6858

MEDIUM

Arista EOS 802.1X Multi-Auth - Authentication Bypass

Title source: manual

Description

In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port if there exists an EAPOL capable device in the fallback VLAN.

References (1)

Core 1

Core References

https://www.arista.com/en/support/advisories-notices/security-advisory/19917-security-advisory-0103

Scores

CVSS v3 6.5

EPSS 0.0014

EPSS Percentile 3.9%

Attack Vector ADJACENT_NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-1287

Status published

Products (4)

Arista Networks/EOS 4.28.10 - 4.28.10.1M

Arista Networks/EOS 4.29.0 - 4.29.7M

Arista Networks/EOS 4.30.0 - 4.30.5M

Arista Networks/EOS 4.31.0 - 4.31.1F

Published Jun 04, 2026

Tracked Since Jun 05, 2026