---
id: CVE-2026-102020
title: >-
  A Reachable Assertion vulnerability in the rpd process of Juniper Networks
  Junos OS and Junos OS Evolved allows an authenticated network-based attacker
  to cause a denial of service via BGP-LS routing updates.
summary: >-
  A Reachable Assertion vulnerability in the rpd process of Juniper Networks
  Junos OS and Junos OS Evolved allows an authenticated network-based attacker
  to cause a denial of service via BGP-LS routing updates.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-617
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:54.873'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102020'
references:
  - url: 'https://supportportal.juniper.net/JSA112187'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.649Z'
---

## Overview

A Reachable Assertion vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker to cause a denial of service via BGP-LS routing updates.

## Remediation

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