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CVE-2025-34227

HighPublished

Nagios XI < 2026R1 Configuration Wizard Authenticated Command Injection

Published: Sep 25, 2025
Updated: May 15, 2026
Assigning CNA: VulnCheck
Evidence observed: Aug 8, 2026

Primary CVSS

8.6/ 10High

nvd · CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

24.3%

Moderate · next 30 days

Percentile: 97.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Nagios XI < 2026R1 is vulnerable to an authenticated command injection vulnerability within the MongoDB Database, MySQL Query, MySQL Server, Postgres Server, and Postgres Query wizards. It is possible to inject shell characters into arguments provided to the service and execute arbitrary system commands on the underlying host as the `nagios` user.

Sources

CVE-2025-34227_Nagios-XI-Command-Injection-Configuration-WizardPoC
Simple proof of concept repository for CVE-2025-34227 Nagios XI authenticated command injection in Configuration Wizard

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