Hi makes,
Thanks for the query. At this time there is no specific AV or IPS signatrue against attempted exploit of the QT vulnerabilities. (I am also not aware of any malware that attempts to exploit these in teh wild.)
Blocking QT by Software Restriction Policy or ADC policy until it can be uninstalled from Windows machines is the best course of action.
Hope this helps! Please do keep this thread up-to-date with your progress, or mark it solved if you have received your answer.
With thanks and best regards,
Mick