Description
Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – < 16.0.20326.20138 | 16.0.20326.20138 |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 – < 16.0.5569.1003 | 16.0.5569.1003 |
| Microsoft | Microsoft Office 2016 | 16.0.0 – < 16.0.5569.1003 | 16.0.5569.1003 |
| Microsoft | Microsoft Office 2019 | 19.0.0 – < 16.0.10417.20207 | 16.0.10417.20207 |
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 – < 16.113.26091433 | 16.113.26091433 |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 – < 16.0.14334.20906 | 16.0.14334.20906 |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 – < 16.0.17932.20976 | 16.0.17932.20976 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 – < 16.113.26091433 | 16.113.26091433 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 – < 16.113.26091433 | 16.113.26091433 |
Advisories 3
- MSRC-CVE-2026-81399 Microsoft Excel Information Disclosure Vulnerability Microsoft Security Response Center · Sep 17, 2026
- WID-SEC-2026-3234 Microsoft Office Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- NCSC-2026-0352 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Sep 8, 2026
References
- Microsoft Excel Information Disclosure Vulnerability vendor-advisory patch