---
id: CVE-2026-101951
title: >-
  An Improper Validation of Consistency within Input vulnerability in the
  routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS
  Evolved allows a network-adjacent configured BGP peer to cause a denial of
  service by sending…
summary: >-
  An Improper Validation of Consistency within Input vulnerability in the
  routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS
  Evolved allows a network-adjacent configured BGP peer to cause a denial of
  service by sending…
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-1288
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:48.030'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101951'
references:
  - url: 'https://supportportal.juniper.net/JSA112187'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.631Z'
---

## Overview

An Improper Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-adjacent configured BGP peer to cause a denial of service by sending a specifically malformed BGP MCAST-TREE update and this NLRI is then attempted to be readvertised.

## Remediation

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