VULNERABILITY INTELLIGENCE

CVE-2020-36856

CVSS score8.8 HIGH
EPSS probability2.45%
CISA KEVNot currently listed
Published2025-10-30
Last modified2026-10-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-78

Primary references