---
id: CVE-2026-102087
title: >-
  An Incomplete List of Disallowed Inputs vulnerability in the routing protocol
  daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an
  unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).


  When in a BGP …
summary: >-
  An Incomplete List of Disallowed Inputs vulnerability in the routing protocol
  daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an
  unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).


  When in a BGP …
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-184
vendor: Juniper Networks
product: Junos OS
affected:
  - junos_os < 23.2R2-S6
  - junos_os >= 23.4 < 23.4R2-S7
  - junos_os >= 24.2 < 24.2R2-S4
  - junos_os >= 24.4 < 24.4R2-S4
  - 'junos_os >= 25.2 < 25.2R1-S2, 25.2R2'
  - junos_os_evolved < 23.2R2-S6-EVO
  - junos_os_evolved >= 23.4 < 23.4R2-S8.11-EVO
  - junos_os_evolved >= 24.2 < 24.2R2-S4-EVO
  - junos_os_evolved >= 24.4 < 24.4R2-S5-EVO
  - 'junos_os_evolved >= 25.2 < 25.2R1-S2-EVO, 25.2R2-EVO'
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T16:24:19.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102087'
references:
  - url: 'https://supportportal.juniper.net/JSA112168'
    label: sirt@juniper.net
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-14T20:16:18.843641Z'
ingestedAt: '2026-10-14T17:44:53.668Z'
epss: 0.00251
epssPercentile: 0.16346
---

## Overview

An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.

This issue affects:
Junos OS:


  *  All versions before 23.2R2-S6;
  *  23.4 versions before 23.4R2-S7;
  *  24.2 versions before 24.2R2-S4;
  *  24.4 versions before 24.4R2-S4;
  *  25.2 versions before 25.2R1-S2, 25.2R2;



Junos OS Evolved:
  *  All versions before 23.2R2-S6-EVO;
  *  23.4 versions before 23.4R2-S8.11-EVO;
  *  24.2 versions before 24.2R2-S4-EVO;
  *  24.4 versions before 24.4R2-S5-EVO;
  *  25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;

## Remediation

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