The United States Computer Emergency Readiness Team (US-CERT) has made an official announcement on the vulnerability of Apple QuickTime for Windows:

https://www.us-cert.gov/ncas/alerts/TA16-105A

This vulnerability can occur if the user visits a malicious web page, or opens a malicious .MOV file in either the QuickTime Player or in EDIUS.

Affected Versions:

• EDIUS Workgroup 9 / Pro 9
• EDIUS Workgroup 8 / Pro 8
• EDIUS Elite 7 / Pro 7
• EDIUS XS
• EDIUS Elite / Pro 6.5
• EDIUS Neo 3.5
• EDIUS Express
  (plus all previous versions of EDIUS ,which are already End of Service).

Functionality will be lost is vary depending on EDIUS versions. See the PDF more details including workaround.