| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2026-20952 | Microsoft Office Remote Code Execution Vulnerability | Microsoft 365, Microsoft Office | Critical | 29-01-2026 |
Technical Information
An unauthenticated attacker could exploit a use-after-free vulnerability to achieve arbitrary code execution locally, either by running a specially crafted application or by delivering a malicious file or email that triggers the flaw without requiring user interaction.
Patch release date: Jan 13, 2026
Further information on this vulnerability is available at : CVE-2026-20952
Affected Software
Microsoft Office 2019 for 64-bit editions,Microsoft Office 2019 for 32-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)