Authenticated Command Injection Vulnerability in Nagios XI by Nagios
CVE-2025-34227

8.6HIGH

Key Information:

Vendor

NagiOS

Status
NagiOS Xi
Vendor
CVE Published:
25 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-34227?

Nagios XI versions prior to 2026R1 are susceptible to an authenticated command injection issue. This vulnerability exists within the wizards for MongoDB Database, MySQL Query, MySQL Server, Postgres Server, and Postgres Query. It allows attackers to insert shell characters into command arguments, enabling them to execute arbitrary system commands on the host system as the nagios user. Addressing this vulnerability is crucial to maintain the integrity and security of the affected systems.

Affected Version(s)

Nagios XI * < 2026R1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-34227 - Proof of Concept

CVE-2025-34227_Nagios-XI-Command-Injection-Configuration-Wizard
Created by mcorybillington

References

https://www.nagios.com/changelog/
vendor-advisorypatch
https://www.nagios.com/products/security/
vendor-advisorypatch
https://www.vulncheck.com/advisories/nagios-xi-config-wiz...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

M. Cory Billington of theyhack.me
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CVE-2025-34227 : Authenticated Command Injection Vulnerability in Nagios XI by Nagios