CVE-2026-2042
Nagios Host monitoringwizard Command Injection Remote Code Execution Vulnerability.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.52% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- nagios/nagios xi
- Source
- zdi-disclosures@trendmicro.com
References
- https://www.nagios.com/changelog/nagios-xi/nagios-xi-2026r1-0-1/Product, Release Notes
- https://www.zerodayinitiative.com/advisories/ZDI-26-071/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.