| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2026-77898 | Microsoft Office Remote Code Execution Vulnerability | Microsoft Office, Microsoft 365 | Critical | 15-10-2026 |
Technical Information
An unauthenticated attacker could exploit a heap-based buffer overflow vulnerability by convincing a user to open and save a specially crafted document, enabling remote code execution with user privileges.
Patch release date: Sep 08, 2026
Further information on this vulnerability is available at : CVE-2026-77898
Affected Software
Microsoft Office LTSC 2024 for 32-bit editions,Microsoft Office LTSC 2021 for 64-bit editions,
Microsoft Office LTSC 2021 for 32-bit editions,
Microsoft Office 2019 for 64-bit editions,
Microsoft Office 2019 for 32-bit editions,
Microsoft Office LTSC 2024 for 64-bit editions,
Microsoft 365 Apps for Enterprise for 32-bit Systems,
Microsoft 365 Apps for Enterprise for 64-bit Systems,
Microsoft Office 365 for Mac,
Microsoft Office LTSC for Mac 2021,
Microsoft Office LTSC for Mac 2024