Arista Networks EOS Security Update (SA0140)

medium Nessus Plugin ID 318805

Synopsis

The version of Arista Networks EOS running on the remote device is affected by a vulnerability.

Description

The version of Arista Networks EOS running on the remote device is affected by a vulnerability as referenced in security advisory SA0140.

- A user with local eos-admin privileges on affected Arista EOS (Extensible Operating System) platforms where secure boot is enabled can bypass Secure Boot Software Image (SWI) verification through the use of a specially crafted file.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Apply the patch or upgrade to a fixed version as referenced in the vendor advisory.

Plugin Details

Severity: Medium

ID: 318805

File Name: arista_eos_sa0140.nasl

Version: 1.1

Type: Combined

Family: Misc.

Published: 6/5/2026

Updated: 6/5/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

CVSS v3

Risk Factor: Medium

Base Score: 6

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

CVSS v4

Risk Factor: Medium

Base Score: 6.8

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:arista:eos

Required KB Items: Host/Arista-EOS/Version, Host/Arista-EOS/model, Settings/ParanoidReport

Patch Publication Date: 6/3/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-10040

IAVA: 2026-A-0545

Detections

Analytics