The most recent security update took care of that.
actually, it didn't, apple did a half baked job, only patched half of the problem.
But is there any realistic way this could be exploited? That's the way all of these are.
The problem is the question you asked can not be accurately answered. Which is same for windows. If we entering "realistic exploit" discussion. We don't even have good number for windows (especially vista) anymore.
For OP.
Yes, for various reason, OSX is
relatively much safer right now.
However, the situation is changing, and several points you might want to check:
1. Apple previously advised OSX users to install AV app in one of its release notes.
2. There are more to internet security than Viruses, Trojans, malwars etc, Phishing is a problem in OSX if you use safari, which provides no anti-phishing measures.
3. Apple does not usually respond to security risk very well. case in point, aforementioned DNS hole, M$ and some Linux vendors patched the problem immediately upon disclosure of the bug, While Apple took almost 3 weeks to issue a half finished patch.
4. The real concern I have, is that facing the not-so-good trend, there is limited, if any, actions that have been taken by apple.
For now, many people suggest free
ClamXav. I sure hope there will be more transparent solutions from third parties and more comprehensive statements regarding the security from apple.