ActFax LPD/LPR Server Denial of Service Vulnerability

The host is running ActFax LPD/LPR Server and is prone to denial of service vulnerability.
Successful exploitation will allow remote attackers to cause a denial of service. Impact Level: Application
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
The flaw is caused by a buffer overflow error when processing packets sent to port 515/TCP, which could be exploited by remote unauthenticated attackers to crash an affected daemon or execute arbitrary code.
ActiveFax Version 4.25 (Build 0221), Other versions may also be affected.