Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 – < 16.0.5556.1001 | 16.0.5556.1001 |
| Microsoft | Microsoft Office 2019 | 19.0.0 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 – < 16.110.26061317 | 16.110.26061317 |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 – < 16.110.26061317 | 16.110.26061317 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 – < 16.110.26061317 | 16.110.26061317 |
| Microsoft | Office Online Server | 16.0.0.0 – < 16.0.10417.20137 | 16.0.10417.20137 |
Advisories 3
- MSRC-CVE-2026-44818 Microsoft Excel Remote Code Execution Vulnerability Microsoft Security Response Center · Jun 19, 2026
- WID-SEC-2026-1847 Microsoft Office: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 9, 2026
- NCSC-2026-0182 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Jun 9, 2026
References
- Microsoft Excel Remote Code Execution Vulnerability vendor-advisory patch