---
id: CVE-2026-102031
title: >-
  An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS
  Evolved allows a low-privileged TACACS+-authenticated user to execute commands
  with root privileges when periodic TACACS+ authorization-refresh is enabled.
summary: >-
  An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS
  Evolved allows a low-privileged TACACS+-authenticated user to execute commands
  with root privileges when periodic TACACS+ authorization-refresh is enabled.
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-78
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:56.617'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102031'
references:
  - url: 'https://supportportal.juniper.net/JSA112250'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.652Z'
---

## Overview

An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS Evolved allows a low-privileged TACACS+-authenticated user to execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled.

## Remediation

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