...
The Sangoma and FreePBX team has deemed this a serious security issue, after the exploit was discovered in the wild, and immediately released a patch to resolve it. We strongly encourage all users of FreePBX 13 to upgrade to the latest cel version. This can be done from the Module Admin GUI or fwconsole. For more information on using Module Admin, please see httphttps://wikisangomakb.freepbx.org/display/FPGatlassian.net/wiki/spaces/PG/pages/20023939/Module+Admin+User+Guide .
Sangoma takes security seriously and requests that any future FreePBX security issue be reported at security@freepbx.org.