Command Injection Vulnerability in Nagios Host Monitoring Wizard by Nagios
CVE-2026-2042

7.2HIGH

Key Information:

Vendor

NagiOS

Status
Host
Vendor
CVE Published:
20 February 2026

What is CVE-2026-2042?

A command injection vulnerability exists in the monitoringwizard module of Nagios Host. This flaw arises from inadequate validation of user-supplied data used for system calls. Attackers with authentication can exploit this issue to execute arbitrary code within the context of the service account, potentially leading to unauthorized access and control of the affected installations.

Affected Version(s)

Host 2026R1

References

https://www.zerodayinitiative.com/advisories/ZDI-26-071/
x_research-advisory
https://www.nagios.com/changelog/nagios-xi/nagios-xi-2026...
vendor-advisory

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.0

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.