| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2026-45463 | Microsoft Office Remote Code Execution Vulnerability | Microsoft Office, Microsoft 365 Apps | Critical | 01-07-2026 |
Technical Information
An unauthenticated attacker can exploit by triggering an integer underflow and subsequent buffer overflow that leads to arbitrary code execution in the context of the affected application.
Patch release date: Jun 09, 2026
Further information on this vulnerability is available at : CVE-2026-45463
Affected Software
Microsoft Office 365 for Mac,Microsoft Office for Android,
Microsoft Office 2019 for 32-bit editions,
Microsoft Office 2019 for 64-bit editions,
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,
Microsoft Office 2016 (32-bit edition),
Microsoft Office 2016 (64-bit edition)