CVE-2026-2043HIGH 8.8EPSS p99.4%

CVE-2026-2043CVE-2026-2043

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS74.17% probability of exploitation · percentile 99.4% · 2026-06-19T12:03:05Z
Published2026-02-20
Last modified2026-02-24

Underlying weaknesses· 1

CWE-78

References

  1. https://www.nagios.com/changelog/nagios-xi/nagios-xi-2026r1-0-1/
  2. https://www.zerodayinitiative.com/advisories/ZDI-26-072/

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.