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CVE-2026-2043

Published: Feb 20, 2026Updated: Feb 24, 2026 Sources: CVE List NVDCWE-78
NVD MITRE
8.8CVSSHIGH
EPSS Score
74.2%
Top 0.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-78

Affected Products

nagios xinagios
On-premWeb App
Enterprise Software / itsm-monitoring
HostNagios
On-prem
Enterprise Software / itsm-monitoring
nagioscommercialUSEnterprise Softwareaka nagios xi

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

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

Timeline

Published
Feb 20, 2026
Last Updated
Feb 24, 2026

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