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

Critical · CVSS 9.4CVE-2025-34134

Nagios XI < 2024R1.4.2 RCE via Business Process Intelligence (BPI)

Answer in brief

CVE-2025-34134 records a Critical severity (CVSS 9.4) vulnerability in Nagios XI < 2024R1.4.2 RCE via Business Process Intelligence (BPI). The current sources do not mark it as known exploited. The current feed maps Nagios/XI (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 30, 2025Updated Sep 30, 2026Source checked Sep 30, 2026First seen by HOL Sep 30, 2026Material review Sep 30, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Nagios/XI (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Nagios/XIgeneric	>=0 <2024R1.4.2	2024R1.4.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Nagios/XI.
Review the reported fix. Source-reported solution: Nagios addresses this vulnerability as "Nagios XI was vulnerable to remote code execution via the Business Process Intelligence (BPI) component" and "Fixed an issue with BPI configuration and log files."

Evidence timeline and material changes

Published upstream
Oct 30, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 30, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.