Description
Integer underflow (wrap or wraparound) in Microsoft Office 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 Office 2016 | 16.0.0 – < 16.0.5565.1001 | 16.0.5565.1001 |
| Microsoft | Microsoft Office 2019 | 19.0.0 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 – < 16.112.26081010 | 16.112.26081010 |
| 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 – < 16.112.26081010 | 16.112.26081010 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 – < 16.112.26081010 | 16.112.26081010 |
Advisories 3
- WID-SEC-2026-2762 Microsoft Office Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 23, 2026
- NCSC-2026-0286 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Aug 27, 2026
- MSRC-CVE-2026-64909 Microsoft Office Remote Code Execution Vulnerability Microsoft Security Response Center · Aug 11, 2026
References
- Microsoft Office Remote Code Execution Vulnerability vendor-advisory patch