CVE-2026-55050
Medium
Description
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Microsoft 365
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- microsoft office_202116.111.26071215 or later
- microsoft office_202416.111.26071215 or later
- microsoft office_online_server16.0.10417.20175 or later
- microsoft sharepoint_server16.0.19725.20434 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft microsoft_365 | No range specified | — |
| microsoft 365_apps | No range specified | — |
| microsoft office_2019 | No range specified | — |
| microsoft office_2021 | v < 16.111.26071215, No range specified | 16.111.26071215 |
| microsoft office_2024 | v < 16.111.26071215, No range specified | 16.111.26071215 |
| microsoft office_online_server | v < 16.0.10417.20175 | 16.0.10417.20175 |
| microsoft sharepoint_server | v < 16.0.19725.20434, 2016, 2019 | 16.0.19725.20434 |
| microsoft word | 2016 | — |
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