Disclosure 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 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.
Source-reported weakness categories
CWE-78
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-34286
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| nagios | nagios_xi | * {"versionEndExcluding":"2026"} |
Original records & references
- NIST NVD record
- CVE Program record
- www.nagios.com — Release Notes
- www.nagios.com — Vendor Advisory
- www.vulncheck.com — Third Party Advisory
PUBLISHED 2025-10-30T18:15:48-04:00
MODIFIED 2026-10-07T17:10:00-04:00
INGESTED 2026-10-08T12:35:14-04:00