CVE-2025-34286

Name: CVE-2025-34286
Creator: NVD / NIST
Published: 2025-10-30T22:15:48.92+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.4/10EPSS 2.01%

Last modified Jun 17, 2026

CVE-2025-34286 is a critical-severity vulnerability rated 9.4/10 on the CVSS scale. Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. EPSS estimates a 2.01% chance of exploitation in the next 30 days.

Description

Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain control of the underlying host operating system.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

9.4/10

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/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

2.01%

78.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Nagios	Nagios Xi	< 2026

References

https://www.nagios.com/changelog/nagios-xi/Release Notes
https://www.nagios.com/products/security/#nagios-xiVendor Advisory
https://www.vulncheck.com/advisories/nagios-xi-rce-via-run-check-command-in-ccmThird Party Advisory

Timeline

Published: Oct 30, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-34286?

How severe is CVE-2025-34286?

CVE-2025-34286 has a CVSS score of 9.4/10 (CRITICAL severity). The EPSS model estimates a 2.01% probability of exploitation in the next 30 days.

How do I fix CVE-2025-34286?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-34286?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST