| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2026-88156 | Microsoft Office Outlook Remote Code Execution Vulnerability | Microsoft Office, Microsoft 365 | Critical | 03-11-2026 |
Technical Information
An unauthenticated attacker can exploit a stack-based buffer overflow vulnerability by sending a specially crafted email message to a target user, triggering remote code execution when the message is viewed in the Reading Pane without requiring further user interaction, authentication, or any action to open or click the message.
Patch release date: Oct 13, 2026
Further information on this vulnerability is available at : CVE-2026-88156
Affected Software
Microsoft Office 365 for Mac,Microsoft 365 Apps for Enterprise for 32-bit Systems,
Microsoft 365 Apps for Enterprise for 64-bit Systems,
Microsoft Office LTSC for Mac 2021,
Microsoft Office LTSC 2021 for 64-bit editions,
Microsoft Office LTSC 2021 for 32-bit editions,
Microsoft Office LTSC 2024 for 32-bit editions,
Microsoft Office LTSC 2024 for 64-bit editions,
Microsoft Office LTSC for Mac 2024