If all your critical updates are installed you are protected against DSO Exploit and the finding in Spybot is just a nuisance. Eliminate this by doing the following: 
 
1 Open Spybot and select 'advanced' mode. 
2 Select 'settings' in the left column. 
3 Select 'ignore product' in the left column. 
4 Select 'security' tab. 
5 Place check mark in box beside DSO Exploit. 
6 Close program 
7 Open Spybot and run a scan. 
 
You will find that DSO Exploit has been eliminated and if your computer does not harbour any other spyware you will see a congratulatory message.