Nagios Host esensors_websensor_configwizard_func Command Injection Remote Code Execution Vulnerability
Published Feb 20, 2026
8.8
HIGHCVSS 3.1
EPSS 73.75%
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.
Affected products
-
- Version 2026R1StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 25, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Feb–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 73.75% (0.73748) | 99.46th | v5 (v2026.06.15) |
| Jul 19, 2026 | 72.91% (0.72908) | 99.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 74.17% (0.74172) | 99.42th | v5 (v2026.06.15) |
| Mar 17, 2026 | 1.54% (0.01540) | 81.17th | v4 (v2025.03.14) |
| Feb 21, 2026 | 0.47% (0.00466) | 63.95th | v4 (v2025.03.14) |
References (2)
- https://www.nagios.com/changelog/nagios-xi/nagios-xi-2026r1-0-1/ vendor-advisoryProductRelease Notes
- https://www.zerodayinitiative.com/advisories/ZDI-26-072/ x_research-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.nagios.com/changelog/nagios-xi/nagios-xi-2026r1-0-1/ | vendor-advisoryProductRelease Notes | |
| https://www.zerodayinitiative.com/advisories/ZDI-26-072/ | x_research-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.