CVE-2016-3366: Microsoft Outlook

Medium severity, CVSS 6.5. EPSS: 16.2% chance of exploitation in the next 30 days.

Microsoft Outlook 2007 SP3, Outlook 2010 SP2, Outlook 2013 SP1, Outlook 2013 RT SP1, Outlook 2016, and Outlook 2016 for Mac do not properly implement RFC 2046, which allows remote attackers to bypass virus or spam detection via crafted MIME data in an e-mail attachment, aka "Microsoft Office Spoofing Vulnerability."

Affected products

• Microsoft Outlook: version 2007 only; version 2010 only; version 2013 only; version 2016 only

Published 2016-09-14. Last modified 2026-06-17.