---
id: CVE-2026-73440
title: >-
  On affected platforms running Arista EOS with Simple Network Management
  Protocol (SNMP) configured, SNMPv3 local or remote user credentials may be
  exposed as a one-way hashed, localized key value within the device's running
  and sanitized…
summary: >-
  On affected platforms running Arista EOS with Simple Network Management
  Protocol (SNMP) configured, SNMPv3 local or remote user credentials may be
  exposed as a one-way hashed, localized key value within the device's running
  and sanitized…
severity: medium
cvss: 4.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-212
vendor: Arista Networks
product: EOS
affected:
  - EOS >= 4.36.0F <= 4.36.1F
  - EOS >= 4.35.0F <= 4.35.5M
  - EOS >= 4.34.0F <= 4.34.7.1M
  - EOS >= 4.33.0F <= 4.33.9M
  - EOS >= 1.0.0 < 4.33.0F
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:08:50.420'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73440'
references:
  - url: >-
      https://www.arista.com/en/support/advisories-notices/security-advisory/24734-security-advisory-0178
    label: psirt@arista.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T13:40:14.055400Z'
ingestedAt: '2026-09-16T10:53:53.920Z'
epss: 0.00266
epssPercentile: 0.1667
---

## Overview

On affected platforms running Arista EOS with Simple Network Management Protocol (SNMP) configured, SNMPv3 local or remote user credentials may be exposed as a one-way hashed, localized key value within the device's running and sanitized configurations. An authenticated user who gains access to this sensitive information could leverage it to perform unauthorized read operations on SNMP tables or to send fraudulent trap notifications to the Network Management System (NMS).

This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.