V-webmail Multiple PHP Remote File Inclusion Vulnerability

Summary
The host is running V-webmail and is prone to Multiple PHP Remote File Inclusion vulnerability.
Impact
Successful exploitation will let the remote attacker to execute arbitrary PHP code via a URL in the CONFIG[pear_dir] or CONFIG[includes] parameters when register_globals is enabled. Impact Level: Application
Solution
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.
Insight
The flaws are due to error in 'CONFIG[pear_dir]' parameter to Mail/RFC822.php, Net/Socket.php, XML/Parser.php, XML/Tree.php, Mail/mimeDecode.php, Log.php, Console/Getopt.php, System.php, and File.php in includes/pear/ directory and also in includes/cachedConfig.php, includes/mailaccess/pop3.php, and includes/prepend.php files, and error exists in 'CONFIG[includes]' parameter to prepend.php and email.list.search.php in includes/.
Affected
V-webmail version 1.6.4 and prior
References