---
id: CVE-2026-101993
title: >-
  A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of
  Juniper Networks Junos OS and Junos OS Evolved allows an adjacent eBGP peer to
  cause a denial of service via a VPLS signaling update when automatic site-ID
  negot…
summary: >-
  A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of
  Juniper Networks Junos OS and Junos OS Evolved allows an adjacent eBGP peer to
  cause a denial of service via a VPLS signaling update when automatic site-ID
  negot…
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-617
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:52.063'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101993'
references:
  - url: 'https://supportportal.juniper.net/JSA112187'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.641Z'
---

## Overview

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent eBGP peer to cause a denial of service via a VPLS signaling update when automatic site-ID negotiation is enabled.

## Remediation

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