CVE-2023-33151: Microsoft 365 Apps

Medium severity, CVSS 6.5. EPSS: 3.4% chance of exploitation in the next 30 days.

Microsoft Outlook Spoofing Vulnerability

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2013 only; version 2016 only; version 2019 only
• Microsoft Office Long Term Servicing Channel: version 2021 only

Published 2023-07-11. Last modified 2026-06-17.