Nagios XI < 2024R2 Authenticated Command Injection via WinRM Plugin (CVE-2025-34284) | HOL Guard CVE

Critical · CVSS 9.4CVE-2025-34284

Nagios XI < 2024R2 Authenticated Command Injection via WinRM Plugin

Answer in brief

CVE-2025-34284 records a Critical severity (CVSS 9.4) vulnerability in Nagios XI < 2024R2 Authenticated Command Injection via WinRM Plugin. 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 <2024R2	2024R2

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 authenticated command injection via the WinRM plugin" and "Fixed security issue in WinRM wizard."

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 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.

Quoted source text, attributed separately from HOL analysis.