---
id: CVE-2026-101956
title: >-
  An Improper Authentication vulnerability in the J-Web web management component
  of Juniper Networks Junos OS allows an unauthenticated remote attacker to
  execute arbitrary Junos commands with root privileges via the exposed J-Web
  web inte…
summary: >-
  An Improper Authentication vulnerability in the J-Web web management component
  of Juniper Networks Junos OS allows an unauthenticated remote attacker to
  execute arbitrary Junos commands with root privileges via the exposed J-Web
  web inte…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-287
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:48.353'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101956'
references:
  - url: 'https://supportportal.juniper.net/JSA112188'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.632Z'
---

## Overview

An Improper Authentication vulnerability in the J-Web web management component of Juniper Networks Junos OS allows an unauthenticated remote attacker to execute arbitrary Junos commands with root privileges via the exposed J-Web web interface.

## Remediation

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