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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2025-34286

26
FAUCET Score

CVE-2025-34286 is a high-severity remote code execution vulnerability affecting Nagios XI versions prior to 2026R1. An authenticated administrator can exploit insufficient parameter validation in the Core Config Manager's "Run Check" command to inject shell metacharacters, leading to arbitrary command execution with the privileges of the web application user. This could allow an attacker to gain full control of the underlying host operating system. While no active exploitation, public exploit code, or significant community discussion has been observed, the vulnerability carries a CVSS score of 7.2 and a FAUCET Risk Score of 71/100.

Impacted Technologies

VendorProductVersion(s)CPE
< 2026CPE matchmatch criteria
cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*
>= 0, < 2026R1CPE match
cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.4CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0224 is in the 78th percentile among its peer group of 5,538 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

nagios.com / changelog/nagios-xi
Release Notes
nagios.com / products/security
Vendor Advisory
vulncheck.com / advisories/nagios-xi-rce-via-run-check-command-in-ccm
Third Party Advisory