Description
Heap-based buffer overflow 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 – < 16.0.5561.1001 | 16.0.5561.1001 |
| Microsoft | Microsoft Office 2019 | 19.0.0 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 – < 16.111.26071215 | 16.111.26071215 |
| 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 – < 16.111.26071215 | 16.111.26071215 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 – < 16.111.26071215 | 16.111.26071215 |
| Microsoft | Office Online Server | 16.0.0.0 – < 16.0.10417.20175 | 16.0.10417.20175 |
Advisories 3
- WID-SEC-2026-2317 Microsoft Office Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 12, 2026
- NCSC-2026-0237 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Jul 21, 2026
- MSRC-CVE-2026-55131 Microsoft Excel Remote Code Execution Vulnerability Microsoft Security Response Center · Jul 14, 2026
References
- Microsoft Excel Remote Code Execution Vulnerability vendor-advisory patch