Vulnerability · Published Oct 30, 2025 · Assigned by VulnCheck
CVE-2025-34284Nagios XI < 2024R2 Authenticated Command Injection via WinRM Plugin
Critical 9.4
In plain English
A critical-severity OS command injection in XI from Nagios. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.0% (higher than 91% of all known vulnerabilities).
Official description
Nagios XI versions prior to 2024R2 contain a command injection vulnerability in the WinRM plugin. Insufficient validation of user-supplied parameters allows an authenticated administrator to inject shell metacharacters that are incorporated into backend command invocations. Successful exploitation enables arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to modify configuration, exfiltrate data, disrupt monitoring operations, or execute commands on the underlying host operating system.
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References
- https://www.nagios.com/products/security/#nagios-xi vendor-advisory, patch
- https://www.nagios.com/changelog/nagios-xi/ release-notes, patch
- https://www.vulncheck.com/advisories/nagios-xi-authenticated-command-injection-via-winrm-plugin third-party-advisory