Vulnerability record · CVE-2026-2042 · published 20 February 2026

CVE-2026-2042: Nagios xi os command injection vulnerability

Nagios · Nagios Xi

Nagios Host monitoringwizard Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Nagios Host. Authentication is required to exploit this vulnerability. The specific flaw exists within the monitoringwizard module. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-28245.

8.8 CVSS 3.1 High EPSS 5.6% · top 7.4% CWE-78 · OS command injection

8.8CVSS 3.1 base score

5.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Nagios Xi Nagios

References

Link	Tags
https://www.nagios.com/changelog/nagios-xi/nagios-xi-2026r1-0-1/	ProductRelease Notes
https://www.zerodayinitiative.com/advisories/ZDI-26-071/	Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-2042), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.