---
id: CVE-2026-84190
title: >-
  LibreNMS versions before 26.5.0 contain a remote code execution vulnerability
  in the AboutController where the snmpget configuration parameter is passed to
  shell_exec() without proper validation
summary: >-
  LibreNMS versions before 26.5.0 contain a remote code execution vulnerability
  in the AboutController where the snmpget configuration parameter is passed to
  shell_exec() without proper validation. An authenticated administrator can
  modify…
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-77
published: '2026-09-01'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:18:59.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84190'
references:
  - url: >-
      https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/librenms-before-26.5.0-remote-code-execution-via-aboutcontroller
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00863
epssPercentile: 0.56785
ingestedAt: '2026-09-08T21:11:12.289Z'
---

## Overview

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable file and trigger code execution by accessing the /about endpoint.

## Remediation

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