---
id: CVE-2025-34286
title: >-
  Nagios XI versions prior to 2026R1  contain a remote code execution
  vulnerability in the Core Config Manager (CCM) Run Check command
summary: >-
  Nagios XI versions prior to 2026R1  contain a remote code execution
  vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient
  validation/escaping of parameters used to build backend command lines allows
  an authentica…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: nagios
product: nagios_xi
affected:
  - nagios_xi < 2026
patched:
  - nagios_xi 2026
published: '2025-10-30'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-34286'
references:
  - url: 'https://www.nagios.com/changelog/nagios-xi/'
    label: disclosure@vulncheck.com
  - url: 'https://www.nagios.com/products/security/#nagios-xi'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/nagios-xi-rce-via-run-check-command-in-ccm
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.02405
epssPercentile: 0.83547
ingestedAt: '2026-10-07T21:54:14.907Z'
---

## Overview

Nagios XI versions prior to 2026R1  contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain control of the underlying host operating system.

## Affected

- `nagios_xi < 2026`

## Remediation

Upgrade past the affected range:

- `nagios_xi 2026`