CVE-2020-36856
highpriority · track · 36EPSS 0.025 · 84 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.6–9.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://www.nagios.com/changelog/nagios-xi/cnnvd
- https://www.nagios.com/products/security/#nagios-xicnnvd
- https://www.vulncheck.com/advisories/nagios-xi-authenticated-rce-command-test-php-via-addresscnnvd
- https://www.nagios.com/changelog/nagios-xi/enisa_euvd
- https://www.nagios.com/products/security/#nagios-xienisa_euvd
- https://www.vulncheck.com/advisories/nagios-xi-authenticated-rce-command-test-php-via-addressenisa_euvd
- https://www.nagios.com/changelog/nagios-xi/Release Notesnvd
- https://www.nagios.com/products/security/#nagios-xiRelease Notesnvd
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