Hi Chris, Thanks for the quick response.I found the CVE and it seems it's not a problem if your only using it for file server.(Samba - Security Announcement Archive)    
In Samba before 4.10.18, 4.11.13, 4.12.7 an elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller.Solution Upgrade to the latest version of the Samba server software. The vendor has prepared a fix for this issue in versions 4.10.18, 4.11.13, 4.12.7.   Is there any way to upgrade the samba server version?
The remote Samba server is affected by a privilege escalation vulnerability.