RCE in Nagios Nagios_xi
CVE-2020-36856
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…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.022 (80.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Nagios Nagios_xi
- Nagios Xi — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Release Notes, patch)
- disclosure@vulncheck.com (release-notes, Release Notes, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-36856?
- CVE-2020-36856 is a high-severity vulnerability in Nagios Nagios_xi, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-10-30.
- How severe is CVE-2020-36856?
- High severity. CVSS v3 base score is 8.8 out of 10.