---
id: CVE-2026-102021
title: >-
  A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd)
  of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent network
  attacker to cause a denial of service via a crafted RSVP packet when MPLS-TE
  RSVP …
summary: >-
  A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd)
  of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent network
  attacker to cause a denial of service via a crafted RSVP packet when MPLS-TE
  RSVP …
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-476
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:55.040'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102021'
references:
  - url: 'https://supportportal.juniper.net/JSA112187'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.649Z'
---

## Overview

A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent network attacker to cause a denial of service via a crafted RSVP packet when MPLS-TE RSVP processing is enabled. The condition can terminate rpd and disrupt routing protocol sessions.

## Remediation

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