| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2026-26107 | Microsoft Excel Remote Code Execution Vulnerability | Microsoft Office | High | 18-08-2026 |
Technical Information
A Use After Free vulnerability in Microsoft Excel where if a victim opens a malicious Excel file it may lead to arbitrary code execution.
Patch release date: Mar 10, 2026
Further information on this vulnerability is available at : CVE-2026-26107
Affected Software
Office Online Server,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 Excel 2016 (32-bit edition),
Microsoft Excel 2016 (64-bit edition)