CVE-2026-2042 — HIGH (8.8) — White Hats Nepal

Vulnerability Description

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.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Nagios	Nagios Xi	2026

Related Weaknesses (CWE)

CWE-78

References

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

FAQ

What is CVE-2026-2042?

CVE-2026-2042 is a vulnerability with a CVSS score of 8.8 (HIGH). Nagios Host monitoringwizard Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Nagios Host. Authe...

How severe is CVE-2026-2042?

CVE-2026-2042 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-2042?

Check the references section above for vendor advisories and patch information. Affected products include: Nagios Nagios Xi.