RCE in Nagios Xi
CVE-2025-34286
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.022 (81.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Nagios Nagios_xi
- Nagios Xi — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, patch, Vendor Advisory)
- disclosure@vulncheck.com (release-notes, Release Notes, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-34286?
- CVE-2025-34286 is a high-severity vulnerability in Nagios Xi, classified under OS Command Injection. CVSS score: 7.2/10. Published 2025-10-30.
- How severe is CVE-2025-34286?
- High severity. CVSS v3 base score is 7.2 out of 10.