---
id: CVE-2025-7048
title: >-
  On affected platforms running Arista EOS with MACsec configuration, a
  specially crafted packet can cause the MACsec process to terminate
  unexpectedly
summary: >-
  On affected platforms running Arista EOS with MACsec configuration, a
  specially crafted packet can cause the MACsec process to terminate
  unexpectedly. Continuous receipt of these packets with certain MACsec
  configurations can cause longe…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-805
published: '2026-01-06'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T22:10:00.273'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-7048'
references:
  - url: >-
      https://www.arista.com/en/support/advisories-notices/security-advisory/23120-security-advisory-0132
    label: psirt@arista.com
tags:
  - nvd
epss: 0.00182
epssPercentile: 0.07017
ingestedAt: '2026-09-30T22:27:27.709Z'
---

## Overview

On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the MACsec process to terminate unexpectedly. Continuous receipt of these packets with certain MACsec configurations can cause longer term disruption of dataplane traffic.

## Remediation

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