There are quite a few other issues that it is recommneded that all
users should upgrade to the latest version as there are more security
holes in version 6.x than just you have mentioned.
Reasons to upgrade from 6.x to 7.5 are:-
- Improved security
- Improved performance by over 500% of some files
- Imporved malcious code filters
- 160bit Encryption of passwords with salt value to prevent hackers getting hold of admin passwords etc.
- Imporved SQL injection measures and filters
- Anti-spam remote robot attack/spamming measures
- Security graphic images for new registration and login to prevent remote attacks
- Session ID's checked to prevent remote attacks
- All Form/QueryString and user input checked for malicious code input
- IP banning and email domain banning
- More powerful security options for forums
These are just a few of the security improvements between version 6.x and 7.5 of Web Wiz Forums.