What is CVE-2026-2043?

CVE-2026-2043 is a high-severity vulnerability in Nagios Host, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-02-20.

How severe is CVE-2026-2043?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Nagios Host

CVE-2026-2043

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 requir…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.742 (99.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nagios Host — versions 2026R1

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

ZDI-26-072 (x_research-advisory)
vendor-provided URL (vendor-advisory)

Frequently asked questions

What is CVE-2026-2043?: CVE-2026-2043 is a high-severity vulnerability in Nagios Host, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-02-20.
How severe is CVE-2026-2043?: High severity. CVSS v3 base score is 7.2 out of 10.