Vulnerability · Published Oct 30, 2025 · Assigned by VulnCheck

CVE-2025-34134Nagios XI < 2024R1.4.2 RCE via Business Process Intelligence (BPI)

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 2.4% (higher than 84% of all known vulnerabilities).

Severity (CVSS 4.0)9.4Critical

Exploit odds (30 days)2.4%top 15.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Nagios XI versions prior to 2024R1.4.2 contain a remote code execution vulnerability in the Business Process Intelligence (BPI) component. Insufficient validation and sanitization of administrator-controlled BPI configuration parameters (notably bpi_logfile and bpi_configfile) allow an authenticated administrative user to cause the product to create or overwrite files within the webroot and subsequently edit them via the BPI configuration editor. When such files carry executable extensions and are served by the web application, arbitrary code may be executed in the context of the web application user. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain further control of the underlying host operating system.

Affected products (as reported)

Vendor	Product	Versions
Nagios	XI	0 – before 2024R1.4.2

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-rce-via-business-process-intelligence-bpi third-party-advisory