| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2026-65657 | Microsoft Office Remote Code Execution Vulnerability | Microsoft Office, Microsoft 365 Apps | Critical | 01-09-2026 |
Technical Information
An unauthenticated attacker could exploit a use-after-free flaw in Microsoft Office by convincing a user to open a malicious Office file, allowing arbitrary code execution on the local system.
Patch release date: Aug 11, 2026
Further information on this vulnerability is available at : CVE-2026-65657
Affected Software
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 365 for Mac