---
id: CVE-2026-102047
title: >-
  An Improper Validation of Consistency within Input vulnerability in the l2cpd
  process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent
  unauthenticated Layer 2 attacker to cause a denial of service in associated
  Layer …
summary: >-
  An Improper Validation of Consistency within Input vulnerability in the l2cpd
  process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent
  unauthenticated Layer 2 attacker to cause a denial of service in associated
  Layer …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-1288
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:59.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102047'
references:
  - url: 'https://supportportal.juniper.net/JSA112187'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.657Z'
---

## Overview

An Improper Validation of Consistency within Input vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated Layer 2 attacker to cause a denial of service in associated Layer 2 control protocols via a crafted MVRP Ethernet frame sent to an MVRP-enabled interface.

## Remediation

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