CVE-2026-81401
Medium
Description
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Microsoft Excel
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-843CWE-843
How to fix
Update
- microsoft office_online_server16.0.10417.20207 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft excel | 2016 | — |
| microsoft 365_apps | No range specified | — |
| microsoft microsoft_365 | No range specified | — |
| microsoft office_2016 | No range specified | — |
| microsoft office_2019 | No range specified | — |
| microsoft office_2021 | No range specified | — |
| microsoft office_2024 | No range specified | — |
| microsoft office_online_server | v < 16.0.10417.20207 | 16.0.10417.20207 |
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