How severe is CVE-2026-2043?

CVE-2026-2043 has a CVSS 3.0 base score of 7.2 (HIGH). EPSS estimates a 73.7% probability of exploitation in the next 30 days.

CVE-2026-2043: Nagios Host esensors_websensor_configwizard

Description

Nagios Host esensors_websensor_configwizard_func 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 esensors_websensor_configwizard_func method. 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-28249.

Severity

CVSS 3.0 · CNA7.2 HIGH

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationnone

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Nagios	Host	2026R1

References

2 Links

Vendor advisories

vendor-provided URL

Other references

ZDI-26-072

Record Details

Published

2026-02-20

Last updated

2026-02-26

Assigner (CNA)

zdi

Credited to

More from Nagios

CVE-2026-20417.2

Nagios Host zabbixagent_configwizard_func Command Injection Remote Code Execution Vulnerability

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-78 · OS Command Injection

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.