CVE-2020-36856

HIGH

8.8

Description

Nagios XI versions prior to 5.6.14 contain an authenticated remote command execution vulnerability in the CCM command_test.php script. Insufficient validation of the `address` parameter allows an authenticated user with access to the Core Config Manager to inject shell metacharacters that are incorporated into backend command invocations. Successful exploitation enables arbitrary command execution with the privileges of the Nagios XI web application user and may be leveraged to execute commands on the underlying XI host, modify system configuration, or fully compromise the host.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published10/30/2025

Last Modified11/5/2025

Sourcenvd

Honeypot Sightings0

Affected Products

nagios:nagios_xi

Weaknesses (CWE)

CWE-78

References

https://www.nagios.com/changelog/nagios-xi/(disclosure@vulncheck.com)

https://www.nagios.com/products/security/#nagios-xi(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/nagios-xi-authenticated-rce-command-test-php-via-address(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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