Is CVE-2026-84190 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-84190?

CVE-2026-84190 has a CVSS v3 severity of HIGH (7.2).

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CVE-2026-84190

Description

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable file and trigger code execution by accessing the /about endpoint.