A vulnerability was found in Issabel PBX 4.0.0. It has been rated as critical. This issue affects some unknown processing of the file /index.php?menu=asterisk_cli of the component Asterisk-Cli. The manipulation of the argument Command leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-252251. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.