Is CVE-2026-2043 actively exploited?

CVE-2026-2043 has no public evidence of in-the-wild exploitation as of 2026-02-24.

What is the CVSS score for CVE-2026-2043?

CVE-2026-2043 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-2043?

Patch guidance is available from nagios security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-2043.

Fix CVE-2026-2043 - HIGH nagios nagios xi

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection

Metadata

Primary Vendor: NAGIOS
Published: 2/20/2026
Last Modified: 2/24/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-2043

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary